CN115287515B - Light niobium alloy material for cryogenic environment and preparation method thereof - Google Patents
Light niobium alloy material for cryogenic environment and preparation method thereof Download PDFInfo
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- CN115287515B CN115287515B CN202210794766.6A CN202210794766A CN115287515B CN 115287515 B CN115287515 B CN 115287515B CN 202210794766 A CN202210794766 A CN 202210794766A CN 115287515 B CN115287515 B CN 115287515B
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
Abstract
The invention discloses a light niobium alloy material for a cryogenic environment, and a preparation method and application thereof, belonging to the technical field of alloy preparation and aiming at solving the technical problem that the existing niobium alloy is difficult to have high strength and high toughness in a low-temperature range. The plastic-brittle transition temperature of the light niobium alloy is greatly reduced through multi-element alloying of elements such as tungsten, molybdenum, rhenium, hafnium, titanium, aluminum, vanadium, chromium, zirconium and the like and proper proportion, and the high-temperature strength of the alloy is improved through solid solution strengthening of the niobium alloy; adding a low density element to reduce the density of the alloy; the light alloy material for the cryogenic environment prepared by the invention has excellent performances of high strength, high toughness, excellent plasticity and the like at the temperature of minus 196 ℃; meanwhile, the alloy has low density, and still has good mechanical property and superplasticity at high temperature of 1000 ℃; the alloy can be widely used in the fields of deep space exploration, south pole exploration, north pole exploration and the like.
Description
Technical Field
The invention belongs to the technical field of alloy preparation, and particularly relates to a light niobium alloy material for a cryogenic environment and a preparation method thereof.
Background
The niobium alloy has the advantages of high specific strength, high specific rigidity, high melting point (2468 ℃), good corrosion resistance, good cold and hot forming performance and the like, is a material with very good application prospect in the fields of aerospace, advanced weaponry and the like, is also an advanced material urgently needed by national defense industry in China, and is widely used for manufacturing key parts of rocket engine jet pipes, hypersonic aircrafts, spaceship, missiles, satellites and nuclear reactors. Due to the special nature of the service environment, the niobium alloy is required to have certain strength and toughness at both high temperature and low temperature. Furthermore, in order to meet the demand for weight reduction of such components, it is required to reduce the density of the material.
The more mature commercial niobium alloys used at this stage are mostly C103 (Nb-10 Hf-1Ti-0.7 Zr) and Nb521 (Nb-5W-2 Mo-1 Zr). The Nb521 niobium tungsten alloy (Nb-5W-2 Mo-1 Zr) developed in China is similar to the 5BMV alloy developed in the Su Union. The 5BMV alloy is applied to manufacturing of a thrust chamber body of a binary liquid rocket engine in the soviet union, the working temperature of the thrust chamber can reach about 1550 ℃ under the protection of a molybdenum silicide high-temperature oxidation-resistant coating, the flow of a propellant for cooling a combustion chamber is greatly reduced, and the performance of the engine is improved. Along with the development requirements of more types of engines, the Nb521 niobium tungsten alloy is widely used in the aerospace field in China, and is not only used on a binary liquid rocket engine, but also used for certain high-temperature parts of other high-speed aircrafts. However, the high density of alloys such as niobium tungsten and niobium hafnium cannot meet the urgent requirement of the new generation of aviation aircrafts for weight reduction. To obtain lower density alloys, researchers have developed a variety of low density niobium alloy systems such as Nb-Ti-Al, nb-Ti-Al-Cr, nb-Ti-Al-Mo, nb-Ti-Al-Cr-W, and the like. However, whether a material is available is judged, and the characteristics of the alloy such as density, high-temperature strength, plastic-brittle transition temperature and the like are comprehensively considered, wherein the plastic-brittle transition temperature is particularly important for low-density niobium alloy, because hypersonic airplanes, aerospace vehicles and the like all need to operate in a space environment with a height of tens of thousands of meters, and the working temperature can range from more than 1000 ℃ to minus 100 ℃ or even lower. Niobium alloys generally have better high temperature properties, however, in the low temperature region, niobium alloys tend to undergo plastic-brittle transition, plastic is drastically reduced, and the material exhibits greater brittleness.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a light niobium alloy material for a cryogenic environment and a preparation method thereof, which are used for solving the technical problem that the existing niobium alloy is difficult to have high strength and high toughness in a low-temperature range.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 0 to 2 to 10 percent of Al, 0 to 3 to 7 percent of V, 0 to 0.5 to 5.5 percent of Zr, 0 to 1 to 6 percent of Cr, 0 to 2 to 10 percent of W, 0 to 2 to 10 percent of Mo, 0 to 2 to 10 percent of Re, 0 to 2 to 10 percent of Hf and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 2 to 10 percent of Al, 3 to 7 percent of V, 2 to 10 percent of W, 0.5 to 5.5 percent of Zr,1 to 6 percent of Cr and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 2 to 10 percent of Al, 3 to 7 percent of V, 2 to 10 percent of Mo, 0.5 to 5.5 percent of Zr,1 to 6 percent of Cr and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 2 to 10 percent of Al, 3 to 7 percent of V, 2 to 10 percent of Re, 0.5 to 5.5 percent of Zr, 1 to 6 percent of Cr and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 2 to 10 percent of Al, 3 to 7 percent of V, 2 to 10 percent of Hf, 0.5 to 5.5 percent of Zr, 1 to 6 percent of Cr and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 3 to 7 percent of V, 2 to 10 percent of W, 0.5 to 5.5 percent of Zr and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 3 to 7 percent of V, 2 to 10 percent of Hf, 0.5 to 5.5 percent of Zr and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 3 to 7 percent of V, 2 to 10 percent of Mo, 0.5 to 5.5 percent of Zr, and the balance of Nb or 18 to 48 percent of Ti, 2 to 10 percent of Al, 2 to 10 percent of W, 1 to 6 percent of Cr, and the balance of Nb.
The invention discloses a light niobium alloy material for a cryogenic environment, which comprises the following preparation raw materials in percentage by mass: 18 to 48 percent of Ti, 2 to 10 percent of Al, 2 to 10 percent of Mo, 1 to 6 percent of Cr, and the balance of Nb or 18 to 48 percent of Ti, 2 to 10 percent of Al, 2 to 10 percent of Re, 1 to 6 percent of Cr, and the balance of Nb.
The invention also discloses a preparation method of the light niobium alloy material for the cryogenic environment, which comprises the following steps:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
S2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
s4: extruding the light niobium alloy ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 And (3) carrying out vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and obtaining the light niobium alloy material for the cryogenic environment.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a light niobium alloy material for a cryogenic environment, which greatly reduces the plastic-brittle transition temperature of the light niobium alloy through multi-element alloying of tungsten, molybdenum, rhenium, hafnium, titanium, aluminum, vanadium, chromium, zirconium and other elements and proper proportion; the high-temperature strength of the alloy is improved by adding high-melting-point metal elements such as tungsten, molybdenum, rhenium, hafnium and the like to carry out solid solution strengthening on the niobium alloy; in addition, a certain amount of low-density elements such as titanium, aluminum, vanadium and the like are added to reduce the density of the alloy. Various measures are simultaneously active, and a light niobium alloy with high strength, high toughness and high ductility at extremely low temperatures has been developed. According to the related experimental results, the light niobium alloy material for the cryogenic environment disclosed by the invention still has excellent performances such as high strength, high toughness, excellent plasticity and the like at the temperature of minus 196 ℃ or even lower; meanwhile, the alloy has low density, good mechanical property and superplasticity at 1000 ℃ and higher temperature; the alloy can be widely used in the fields of deep space exploration, south pole exploration, north pole exploration and the like.
Compared with the prior art, the preparation method is simple and environment-friendly, and the material prepared by the method has the advantages of high purity and uniform and fine microstructure, and has wide application prospect.
Drawings
Fig. 1 is a microstructure of a light niobium alloy material for a cryogenic environment prepared in example 1.
Detailed Description
So that those skilled in the art can appreciate the features and effects of the present invention, a general description and definition of the terms and expressions set forth in the specification and claims follows. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and in the event of a conflict, the present specification shall control.
The theory or mechanism described and disclosed herein, whether right or wrong, is not meant to limit the scope of the invention in any way, i.e., the present disclosure may be practiced without limitation to any particular theory or mechanism.
All features such as values, amounts, and concentrations that are defined herein in the numerical or percent ranges are for brevity and convenience only. Accordingly, the description of a numerical range or percentage range should be considered to cover and specifically disclose all possible sub-ranges and individual values (including integers and fractions) within the range.
Herein, unless otherwise indicated, "comprising," "including," "having," or similar terms encompass the meanings of "consisting of … …" and "consisting essentially of … …," e.g., "a includes a" encompasses the meanings of "a includes a and the other and" a includes a only.
In this context, not all possible combinations of the individual technical features in the individual embodiments or examples are described in order to simplify the description. Accordingly, as long as there is no contradiction between the combinations of these technical features, any combination of the technical features in the respective embodiments or examples is possible, and all possible combinations should be considered as being within the scope of the present specification.
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
The following examples use instrumentation conventional in the art. The experimental methods, in which specific conditions are not noted in the following examples, are generally conducted under conventional conditions or under conditions recommended by the manufacturer. The following examples used various starting materials, unless otherwise indicated, were conventional commercial products, the specifications of which are conventional in the art. In the description of the present application and the following examples, "%" means weight percent, and "parts" means parts by weight, and ratios means weight ratio, unless otherwise specified.
Example 1
The preparation method of the light niobium alloy material for the cryogenic environment comprises the following steps:
the light niobium alloy material for the cryogenic environment is prepared from the following raw materials in percentage by mass: 18% of Ti, 2% of Al, 3% of V, 2% of W, 0.5% of Zr0.5%, 1% of Cr and the balance of Nb;
step 1, namely: adding various alloy elements by adopting two methods of pure metal elements and intermediate alloy; aluminum and vanadium are added in an aluminum-vanadium intermediate alloy mode, and other alloy elements are added by adopting pure metal elements; the raw materials adopt the existing national standard, enterprise standard and American standard. Uniformly mixing the weighed raw materials, and pressing the mixture into an electrode;
step 2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 3 times under the Pa condition to obtain a semi-finished ingot, wherein the current of a vacuum electron beam smelting electron beam gun is 2.50A, and the smelting speed is 18mm/min;
step 3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 3 times under the Pa condition to obtain a light niobium alloy cast ingot, wherein the current of vacuum consumable arc smelting is 7KA, and the smelting voltage is 37V;
step 4: extruding the light niobium alloy ingot under the conditions that the extrusion temperature is 950 ℃ and the extrusion ratio is 6 to obtain a light niobium alloy rod blank for a cryogenic environment;
Step 5: the niobium alloy bar is processed under vacuum degree of less than 2 multiplied by 10 -2 And (3) carrying out vacuum annealing under the Pa condition, wherein the annealing temperature is 1150 ℃, and obtaining the light niobium alloy material for the cryogenic environment.
The microstructure of the light niobium alloy material for the cryogenic environment prepared in the embodiment is shown in fig. 1, and as can be seen from fig. 1, the coarse dendritic structure is completely crushed and refined. The prepared light niobium alloy material has fine and uniform crystal grains and is in an equiaxial shape.
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 5.97g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 475MPa, and the elongation after breaking is 29%; the tensile strength is 1050MPa and the elongation after breaking is 15% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 123J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 90MPa at 1000 ℃ and the elongation after break is 155%. The light alloy material for the cryogenic environment prepared by the inventionThe material still has excellent properties of high strength, high toughness, excellent plasticity and the like at the temperature of minus 196 ℃; meanwhile, the alloy has low density, and still has good mechanical property and superplasticity at high temperature of 1000 ℃; the alloy can be widely applied to the fields of deep space exploration, south pole exploration, north pole exploration and the like
Example 2
The preparation method of the light niobium alloy material for the cryogenic environment comprises the following steps:
the light niobium alloy material for the cryogenic environment is prepared from the following raw materials in percentage by mass: 48% of Ti, 2% of Al, 7% of V, 10% of W, 0.5% of Zr0.5%, 6% of Cr and the balance of Nb;
step 1: the various alloy elements are added by adopting two methods of pure metal elements and intermediate alloy; aluminum and vanadium are added in an aluminum-vanadium intermediate alloy mode, and other alloy elements are added by adopting pure metal elements; the raw materials adopt the existing national standard, enterprise standard and American standard. Uniformly mixing the weighed raw materials, and pressing the mixture into an electrode;
step 2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1 time under the Pa condition to obtain a semi-finished ingot, wherein the current of a vacuum electron beam smelting electron beam gun is 2.3A, and the smelting speed is 12mm/min;
step 3: placing the semi-finished product ingot into a vacuum consumable arc furnace, and smelting for 1 time under the condition that the vacuum degree is less than 5 multiplied by 10 < -2 > Pa to obtain a light niobium alloy ingot, wherein the current of vacuum consumable arc smelting is 11KA, and the smelting voltage is 29V;
step 4: extruding the light niobium alloy ingot under the conditions that the extrusion temperature is 1150 ℃ and the extrusion ratio is 4 to obtain a light niobium alloy rod blank for a cryogenic environment;
Step 5: the niobium alloy bar is processed under vacuum degree of less than 2 multiplied by 10 -2 And (3) carrying out vacuum annealing under the Pa condition, wherein the annealing temperature is 950 ℃, and obtaining the light niobium alloy material for the cryogenic environment.
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.10g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 450MPa, and the elongation after breaking is 25%; at a temperature of-196℃ extremely lowTensile strength under the temperature condition is 1005MPa, and elongation after breaking is 11%; impact toughness (aKU 2) value at-150 ℃ of 118J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70MPaa and the elongation after break is 110% at 1000 ℃.
Example 3
The preparation method of the light niobium alloy material for the cryogenic environment comprises the following steps:
the light niobium alloy material for the cryogenic environment is prepared from the following raw materials in percentage by mass: 33% of Ti, 6% of Al, 5% of V, 6% of W, 6% of Zr, 3.5% of Cr and the balance of Nb;
step 1: the various alloy elements are added by adopting two methods of pure metal elements and intermediate alloy. Aluminum and vanadium are added in an aluminum-vanadium intermediate alloy mode, and other alloy elements are added by adopting pure metal elements. The raw materials adopt the existing national standard, enterprise standard and American standard. Uniformly mixing the weighed raw materials, and pressing the mixture into an electrode;
Step 2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 2 times under the Pa condition to obtain a semi-finished ingot, wherein the current of a vacuum electron beam smelting electron beam gun is 2.4A, and the smelting speed is 15mm/min;
step 3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 2 times under the Pa condition to obtain a light niobium alloy cast ingot, wherein the current of vacuum consumable arc smelting is 9KA, and the smelting voltage is 33V;
step 4: extruding the light niobium alloy cast ingot at the extrusion temperature of 1050 ℃ and the extrusion ratio of 5 to obtain a light niobium alloy rod blank for a cryogenic environment;
step 5: and (3) carrying out vacuum annealing on the niobium alloy bar under the condition that the vacuum degree is less than 2 multiplied by 10 < -2 > Pa, wherein the annealing temperature is 1050 ℃, and obtaining the light niobium alloy material for the cryogenic environment.
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.07g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 460MPa, and the elongation after breaking is 27%; the tensile strength is 10035MPa and the breaking strength is achieved under the extremely low temperature condition of minus 196 DEG CThe post elongation is 12%; impact toughness (aKU 2) value at-150 ℃ of 119J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 137%.
Example 4
The preparation method of the light niobium alloy material for the cryogenic environment comprises the following steps:
the light niobium alloy material for the cryogenic environment is prepared from the following raw materials in percentage by mass: 18% of Ti, 2% of Al, 3% of V, 2% of Mo, 0.5% of Zr0.5%, 1% of Cr and the balance of Nb;
step 1: the various alloy elements are added by adopting two methods of pure metal elements and intermediate alloy; aluminum and vanadium are added in an aluminum-vanadium intermediate alloy mode, and other alloy elements are added by adopting pure metal elements. The raw materials adopt the existing national standard, enterprise standard and American standard. Uniformly mixing the weighed raw materials, and pressing the mixture into an electrode;
step 2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 2 times under the Pa condition to obtain a semi-finished ingot, wherein the current of a vacuum electron beam smelting electron beam gun is 2.4A, and the smelting speed is 157mm/min;
step 3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 2 times under the Pa condition to obtain a light niobium alloy cast ingot, wherein the current of vacuum consumable arc smelting is 8KA, and the smelting voltage is 30V;
step 4: extruding the light niobium alloy cast ingot at the extrusion temperature of 1050 ℃ and the extrusion ratio of 5 to obtain a light niobium alloy rod blank for a cryogenic environment;
Step 5: the niobium alloy bar is processed under vacuum degree of less than 2 multiplied by 10 -2 And (3) carrying out vacuum annealing under the Pa condition, wherein the annealing temperature is 1050 ℃, and obtaining the light niobium alloy material for the cryogenic environment.
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 470MPa, and the elongation after breaking is 26%; the tensile strength is 1025MPa and the elongation after breaking is 13% under the extremely low temperature condition of minus 196 ℃; -150 DEG CImpact toughness (aKU 2) value of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 75MPa at 1000 ℃ and the elongation after break is 1260%.
Example 5
The preparation method of the light niobium alloy material for the cryogenic environment comprises the following steps:
the light niobium alloy material for the cryogenic environment is prepared from the following raw materials in percentage by mass: 48% of Ti, 10% of Al, 7% of V, 10% of Mo, 5.5% of Zr5.5%, 6% of Cr and the balance of Nb;
step 1: the various alloy elements are added by adopting two methods of pure metal elements and intermediate alloy; aluminum and vanadium are added in an aluminum-vanadium intermediate alloy mode, and other alloy elements are added by adopting pure metal elements. The raw materials adopt the existing national standard, enterprise standard and American standard. Uniformly mixing the weighed raw materials, and pressing the mixture into an electrode;
Step 2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 2 times under the Pa condition to obtain a semi-finished ingot, wherein the current of a vacuum electron beam smelting electron beam gun is 2.4A, and the smelting speed is 15mm/min;
step 3: placing the semi-finished ingot in a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 2 times under the Pa condition to obtain a light niobium alloy cast ingot, wherein the current of vacuum consumable arc smelting is 9KA, and the smelting voltage is 33V;
step 4: extruding the light niobium alloy cast ingot at the extrusion temperature of 1050 ℃ and the extrusion ratio of 5 to obtain a light niobium alloy rod blank for a cryogenic environment;
step 5: the niobium alloy bar is processed under vacuum degree of less than 2 multiplied by 10 -2 And (3) carrying out vacuum annealing under the Pa condition, wherein the annealing temperature is 1050 ℃, and obtaining the light niobium alloy material for the cryogenic environment.
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.05g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 463MPa, and the elongation after breaking is 28%; the tensile strength is 1021MPa and the elongation after breaking is 12% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 DEG C119J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 73MPa and the elongation after break is 139% under the high temperature condition of 1000 ℃.
Example 6
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 6% of Al, 5% of Mo, 6% of Zr, 3.5% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 471MPa, and the elongation after breaking is 26%; the tensile strength is 1023MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 13%; impact toughness (aKU 2) value at-150 ℃ of 123J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70 MPa-90 MPa at the high temperature of 1000 ℃ and the elongation after break is 110% -155%.
Example 7
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 6% of Al, 5% of Mo, 6% of Zr, 3.5% of Cr and the balance of Nb; the balance being Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.08g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 469MPa, and the elongation after breaking is 26 percent 6; the tensile strength is 1046MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 13%; impact toughness (aKU 2) value at-150 ℃ of 121J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70 MPa-90 MPa at the high temperature of 1000 ℃ and the elongation after break is 110% -155%.
Example 8
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 10% of Al, 7% of V, 10% of Re, 5.5% of Zr5.5%, 6% of Cr and the balance of Nb; the balance being Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 5.98g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 4630MPa, and the elongation after breaking is 27%; the tensile strength is 1033MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 12%; impact toughness (aKU 2) value at-150 ℃ of 119J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 130%.
Example 9
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 6% of Al, 5% of V, 6% of Re, 3% of Zr, 3.5% of Cr and the balance of Nb; the balance being Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm < 2 >. The tensile strength of the alloy material under the room temperature condition is 460MPa, and the elongation after breaking is 26%; the tensile strength is 1027MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 12 percent; impact toughness (aKU 2) value at-150 ℃ of 121J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 77MPa at the high temperature of 1000 ℃ and the elongation after fracture is 155%.
Example 10
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 18% of Ti, 2% of Al, 3% of V, 2% of Re, 0.5% of Zr0.5%, 1% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.05g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 470MPa, and the elongation after breaking is 26%; the tensile strength is 1035MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 12%; impact toughness (aKU 2) value at-150 ℃ of 121J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the Tensile strength at 1000 ℃ under high temperatureThe strength is 76MPa, and the elongation after break is 139%.
Example 11
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 10% of Al, 7% of V, 10% of Hf, 5.5% of Zr5.5%, 6% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 469MPa, and the elongation after breaking is 27%; the tensile strength is 1035MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 12%; impact toughness (aKU 2) value at-150 ℃ of 119J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 136%.
Example 12
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 6% of Al, 5% of V, 6% of Hf, 3% of Zr, 3.5% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 471MPa, and the elongation after breaking is 26%; the tensile strength is 1035MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 13%; impact toughness (aKU 2) value at-150 ℃ of 123J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70 MPa-90 MPa at 1000 ℃ and the elongation after break is 150%.
Example 13
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 18% of Ti, 3% of V, 2% of W, 0.5% of Zr0.5% and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the present embodiment is madeThe density of the prepared light niobium alloy material for the cryogenic environment is 6.09g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 470MPa, and the elongation after breaking is 25%; tensile strength is 1005MPa and elongation after breaking is 11% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 119J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 71MPa and the elongation after break is 112% under the high temperature condition of 1000 ℃.
Example 14
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 7% of V, 10% of W, 5.5% of Zr5% and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.03g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 465MPa, and the elongation after breaking is 27%; the tensile strength is 1020MPa and the elongation after break is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 135%.
Example 15
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 7% of V, 10% of W, 5.5% of Zr5% and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.03g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 465MPa, and the elongation after breaking is 27%; the tensile strength is 1020MPa and the elongation after break is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 135%.
Example 16
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 18% of Ti, 3% of V, 2% of Hf, 0.5% of Zr0.5% of Nb and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.03g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 471MPa, and the elongation after breaking is 27%; the tensile strength is 1020MPa and the elongation after break is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 121J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 150%.
Example 17
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 7% of V, 10% of Hf, 5.5% of Zr5% and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.05g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 469MPa, and the elongation after breaking is 27%; the tensile strength is 1020MPa and the elongation after break is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70 MPa-90 MPa at the high temperature of 1000 ℃ and the elongation after break is 110% -155%.
Example 18
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 5% of V, 6% of Hf, 3% of Zr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.07g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 470MPa, and the elongation after breaking is 27%; resistance at-196 ℃ under extremely low temperature conditionsTensile strength is 1015MPa, and elongation after breaking is 15%; impact toughness (aKU 2) value at-150 ℃ of 123J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70 MPa-90 MPa at 1000 ℃ and the elongation after break is 155%.
Example 19
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 18% of Ti, 3% of V, 2% of Mo, 0.5% of Zr0.5% and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.05g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 470MPa, and the elongation after breaking is 27%; the tensile strength is 1035MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 11%; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 150%.
Example 20
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 7% of V, 10% of Mo, 5.5% of Zr5% and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 5.98g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 465MPa, and the elongation after breaking is 27%; the tensile strength is 1025MPa and the elongation after breaking is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 119J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 87MPa at 1000 ℃ and the elongation after break is 137%.
Example 21
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 5% of V, 6% of Mo, 3% of Zr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 462MPa, and the elongation after breaking is 26%; the tensile strength is 1030MPa and the elongation after breaking is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 121J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 9MPa at 1000 ℃ and the elongation after break is 150%.
Example 22
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 18% of Ti, 2% of Al, 2% of W, 1% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.01g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength of the alloy material under the room temperature condition is 470MPa, and the elongation after breaking is 26%; the tensile strength is 1020MPa and the elongation after break is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 121J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MP at 1000 ℃ and the elongation after break is 119%.
Example 23
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 10% of Al, 10% of W, 6% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength of the alloy material under the room temperature condition is 467MPa, and the elongation after breaking is 26%; the tensile strength is 1030MPa and the elongation after breaking is 11% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 122J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70 MPa-90 MPa at 1000 ℃ and the elongation after break is 150%.
Example 24
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 6% of Al, 6% of W, 3.5% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.07g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 465MPa, and the elongation after breaking is 27%; the tensile strength is 1027MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 13%; impact toughness (aKU 2) value at-150 ℃ of 122J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 149%.
Example 25
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 18% of Ti, 2% of Al, 2% of Mo, 1% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.02g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength of the alloy material under the room temperature condition is 459MPa, and the elongation after breaking is 27%; the tensile strength is 1037MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 12%; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 70 MPa-90 MPa at 1000 ℃ and the elongation after break is 137%.
Example 26
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 10% of Al, 10% of Mo, 6% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
The density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.07g/cm 3 . The alloy material is in the roomThe tensile strength under the temperature condition is 450 MPa-475 MPa, and the elongation after breaking is 25% -29%; the tensile strength is 1039MPa and the elongation after breaking is 12% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 89MPa at 1000 ℃ and the elongation after break is 150%.
Example 27
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 6% of Al, 6% of Mo, 3.5% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 5.99g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 457MPa, and the elongation after breaking is 25%; the tensile strength is 1035MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 12%; impact toughness (aKU 2) value at-150 ℃ of 121J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 77MPa at the high temperature of 1000 ℃ and the elongation after fracture is 119 percent.
Example 28
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 18% of Ti, 2% of Al, 2% of Re, 1% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.01g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 450-475 MPa, and the elongation after breaking is 25-29%; the tensile strength is 1036MPa at the extremely low temperature of-196 ℃ and the elongation after breaking is 12%; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 87MPa at 1000 ℃ and the elongation after break is 135%.
Example 29
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 48% of Ti, 10% of Al, 10% of Re, 6% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 5.99g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 462MPa, and the elongation after breaking is 25%; the tensile strength is 1009MPa and the elongation after breaking is 11% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 119J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at the high temperature of 1000 ℃ and the elongation after fracture is 117 percent.
Example 30
Unlike example 3, the lightweight niobium alloy material for the cryogenic environment in this example is made of the following raw materials in mass percent: 33% of Ti, 6% of Al, 6% of Re, 3% of Cr and the balance of Nb; the rest preparation methods are the same as those of the example 1, and the light niobium alloy material for the cryogenic environment is prepared;
the density of the light niobium alloy material for the cryogenic environment prepared in the embodiment is 6.03g/cm 3 . The tensile strength of the alloy material under the room temperature condition is 462MPa, and the elongation after breaking is 27%; the tensile strength is 1025MPa and the elongation after breaking is 13% under the extremely low temperature condition of minus 196 ℃; impact toughness (aKU 2) value at-150 ℃ of 120J/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The tensile strength is 79MPa at 1000 ℃ and the elongation after break is 137%.
From the experimental results of the above examples, it can be seen that the light alloy material for a cryogenic environment prepared by the invention has excellent properties of high strength, high toughness, excellent plasticity and the like at the temperature of-196 ℃; meanwhile, the alloy has low density, and still has good mechanical property and superplasticity at high temperature of 1000 ℃; the alloy can be widely used in the fields of deep space exploration, south pole exploration, north pole exploration and the like.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (9)
1. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
s2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
S4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
the preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 2% -10% of Al, 3% -7% of V, 0.5% -5.5% of Zr, 1% -6% of Cr, 2% -10% of W, 2% -10% of Mo, 2% -10% of Re, 2% -10% of Hf and the balance of Nb.
2. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
s2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
S3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
s4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
the preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 2% -10% of Al, 3% -7% of V, 2% -10% of W, 0.5% -5.5% of Zr, 1% -6% of Cr and the balance of Nb.
3. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
S2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the electron beam gun for vacuum electron beam melting is 2.30A ultra2.50A, the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
s4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
the preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 2% -10% of Al, 3% -7% of V, 2% -10% of Mo, 0.5% -5.5% of Zr,1% -6% of Cr and the balance of Nb.
4. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
S1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
s2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
s4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
The preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 2% -10% of Al, 3% -7% of V, 2% -10% of Re, 0.5% -5.5% of Zr, 1% -6% of Cr and the balance of Nb.
5. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
s2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
S4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
the preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 2% -10% of Al, 3% -7% of V, 2% -10% of Hf, 0.5% -5.5% of Zr, 1% -6% of Cr and the balance of Nb.
6. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
s2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
S3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
s4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
the preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 3% -7% of V, 2% -10% of W, 0.5% -5.5% of Zr and the balance of Nb.
7. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
S2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
s4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
the preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 3% -7% of V, 2% -10% of Hf, 0.5% -5.5% of Zr and the balance of Nb.
8. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
S1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
s2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Under Pa conditions ofSmelting for 1-3 times to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the current of the vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
s4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
The preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 3% -7% of V, 2% -10% of Mo, 0.5% -5.5% of Zr, and the balance of Nb or 18% -48% of Ti, 2% -10% of Al, 2% -10% of W, 1% -6% of Cr, and the balance of Nb.
9. The preparation method of the light niobium alloy material for the cryogenic environment is characterized by comprising the following steps of:
s1: mixing alloy elements of the preparation raw materials according to the mass percentage, and then pressing into an electrode; if the alloy elements of the preparation raw materials comprise Al and V alloy elements, the Al and V alloy elements are added in a master alloy mode, and other alloy elements are added in a pure metal mode;
s2: placing the electrodes in a vacuum electron beam melting furnace, and vacuum degree is less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a semi-finished ingot; the current of the vacuum electron beam melting electron beam gun is 2.30A-2.50A, and the melting speed is 12 mm/min-18 mm/min;
s3: placing the semi-finished ingot into a vacuum consumable arc furnace, and placing the ingot in a vacuum degree of less than 5×10 -2 Smelting for 1-3 times under the Pa condition to obtain a light niobium alloy cast ingot; the saidThe current of vacuum consumable arc melting is 7 KA-11 KA, and the melting voltage is 29V-37V;
S4: extruding the light niobium alloy cast ingot at the extrusion temperature of 950-1150 ℃ and the extrusion ratio of 4-6 to obtain a light niobium alloy rod blank for a cryogenic environment;
s5: the light niobium alloy rod blank for the deep cooling environment is subjected to vacuum degree of less than 2 multiplied by 10 -2 Vacuum annealing under the Pa condition, wherein the annealing temperature is 950-1150 ℃, and the light niobium alloy material for the cryogenic environment is obtained;
the preparation raw materials of the light niobium alloy material for the cryogenic environment comprise the following components in percentage by mass: 18% -48% of Ti, 2% -10% of Al, 2% -10% of Mo, 1% -6% of Cr, and the balance of Nb or 18% -48% of Ti, 2% -10% of Al, 2% -10% of Re, 1% -6% of Cr, and the balance of Nb.
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| CN103752836A (en) * | 2014-01-16 | 2014-04-30 | 北京科技大学 | Method for manufacturing spherical niobium and titanium-based alloy powder with small particle size |
| CN105296832A (en) * | 2014-06-05 | 2016-02-03 | 中航商用航空发动机有限责任公司 | High-strength niobium-silicon single crystal alloy |
| CN106244884A (en) * | 2016-07-28 | 2016-12-21 | 西北有色金属研究院 | A kind of high intensity low density niobium alloy bar material and preparation method thereof |
| CN109402476A (en) * | 2018-12-13 | 2019-03-01 | 西北有色金属研究院 | A kind of low-density high-strength niobium alloy bar material and preparation method thereof |
| US10844464B1 (en) * | 2017-04-15 | 2020-11-24 | Space Exploration Technologies Corp. | Niobium metal alloy |
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| CN103752836A (en) * | 2014-01-16 | 2014-04-30 | 北京科技大学 | Method for manufacturing spherical niobium and titanium-based alloy powder with small particle size |
| CN105296832A (en) * | 2014-06-05 | 2016-02-03 | 中航商用航空发动机有限责任公司 | High-strength niobium-silicon single crystal alloy |
| CN106244884A (en) * | 2016-07-28 | 2016-12-21 | 西北有色金属研究院 | A kind of high intensity low density niobium alloy bar material and preparation method thereof |
| US10844464B1 (en) * | 2017-04-15 | 2020-11-24 | Space Exploration Technologies Corp. | Niobium metal alloy |
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