CN110699603A - Corrosion-resistant composite metal material and preparation method thereof - Google Patents

Corrosion-resistant composite metal material and preparation method thereof Download PDF

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Publication number
CN110699603A
CN110699603A CN201911107388.4A CN201911107388A CN110699603A CN 110699603 A CN110699603 A CN 110699603A CN 201911107388 A CN201911107388 A CN 201911107388A CN 110699603 A CN110699603 A CN 110699603A
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smelting
corrosion
metal material
composite metal
resistant composite
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CN201911107388.4A
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Chinese (zh)
Inventor
张超彦
张丽霞
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Xuzhou College of Industrial Technology
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Xuzhou College of Industrial Technology
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a corrosion-resistant composite metal material which comprises the following raw materials in percentage by mass: 0.3-0.5% of C, Si: 0.5 to 1.0%, Cr: 1.5-2.0%, Ca: 0.8-1.0%, La: 0.5 to 0.8%, Ni: 0.4-0.7%, B: 0.05 to 0.1%, Zr: 0.05-0.1%, Y: 0.06-0.08%, and the balance of Fe. In addition, the invention also provides a preparation method of the corrosion-resistant composite metal material. According to the invention, by optimizing each element component, the hardness, corrosion resistance, tensile strength, oxidation resistance and mechanical fatigue resistance of the composite metal material are improved, and the prepared corrosion-resistant composite metal material has a wide application range and a wide application prospect.

Description

Corrosion-resistant composite metal material and preparation method thereof
Technical Field
The invention belongs to the technical field of metal material preparation, and particularly relates to a corrosion-resistant composite metal material and a preparation method thereof.
Background
The alloy is a substance with metal characteristics, which is synthesized by two or more metals and metals or nonmetals through a certain method. Typically by melting to a homogeneous liquid and solidifying. According to the number of constituent elements, binary alloys, ternary alloys, and multi-element alloys can be classified. The corrosion-resistant basic alloy elements also comprise nickel, molybdenum, titanium, niobium, copper, nitrogen and the like so as to meet the requirements of various applications on corrosion-resistant structures and performances. With the increasingly poor environment, pollutants in air and rainwater are more and more, the corrosion to materials is also stronger and stronger, and the common metal-based composite material cannot meet the requirements of modern industry and people, so that a high-quality composite metal material with better corrosion resistance is urgently needed to meet the requirements of consumer groups.
Disclosure of Invention
The invention provides a corrosion-resistant composite metal material, which solves the problem that the common metal-based composite material in the prior art can not meet the requirements of modern industry and people.
The first purpose of the invention is to provide a corrosion-resistant composite metal material, which comprises the following raw materials in percentage by mass: 0.3-0.5% of C, Si: 0.5 to 1.0%, Cr: 1.5-2.0%, Ca: 0.8-1.0%, La: 0.5 to 0.8%, Ni: 0.4-0.7%, B: 0.05 to 0.1%, Zr: 0.05-0.1%, Y: 0.06-0.08%, and the balance of Fe.
Preferably, the raw materials of the corrosion-resistant composite metal material comprise the following components in percentage by mass: 0.4% of C, Si: 0.8%, Cr: 1.8%, Ca: 0.9%, La: 0.6%, Ni: 0.5%, B: 0.08%, Zr: 0.08%, Y: 0.07%, the balance being Fe.
The second purpose of the invention is to provide a preparation method of the corrosion-resistant composite metal material, which is implemented by the following steps:
step 1, weighing 0.3-0.5% of C and 0.5% of Si in percentage by mass: 0.5 to 1.0%, Cr: 1.5-2.0%, Ca: 0.8-1.0%, La: 0.5 to 0.8%, Ni: 0.4-0.7%, B: 0.05 to 0.1%, Zr: 0.05-0.1%, Y: 0.06-0.08%, and the balance being Fe to make up 100%;
step 2, putting the raw materials weighed in the step 1 into a smelting furnace for primary smelting, wherein the smelting temperature is 1350-1500 ℃, the smelting time is 1-2 hours, and a primary smelting alloy is obtained after the smelting is finished;
step 3, putting the primary smelting alloy obtained in the step 2 into a smelting furnace for secondary smelting, wherein the smelting temperature is 1500-1550 ℃, the smelting time is 1-2 hours, the secondary smelting alloy is obtained after smelting is finished, and the secondary smelting alloy is hot-rolled into a blank;
step 4, heating the blank in the step 3 to 1000-1200 ℃, then preserving heat for 3-6 h, cooling to room temperature after heat preservation, and carrying out quenching treatment to obtain a quenching treated blank;
and 5, tempering the blank quenched in the step 4 at 700-750 ℃ for 8-10 hours to obtain the corrosion-resistant composite metal material.
Preferably, the smelting furnaces used in the step 2 and the step 3 are vacuum intermediate frequency induction furnaces.
Preferably, the vacuum degree of the vacuum intermediate frequency induction furnace is 1.5 multiplied by 10-3Pa。
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, by optimizing the element components such as C, Si, Cr, Ca, La, Ni, B, Zr, Y and the like, the hardness, corrosion resistance, tensile strength, oxidation resistance and mechanical fatigue resistance of the mechanical material are improved; in the invention, Cr is dissolved in ferrite, so that the electrode potential of the ferrite is improved to be close to that of carbide, the electrode potential difference between the ferrite and the carbide is reduced, and reliable conditions are provided for avoiding electrochemical corrosion; si is a ferrite forming element and can improve the oxidation resistance and the corrosion resistance of the alloy in an oxidizing medium; la and Cr are matched for use and are dissolved in an austenite structure in a solid solution mode, so that the electrode potential of austenite is improved, the alloy is resistant to the corrosion of an oxidizing medium and has certain corrosion resistance to a less strong reducing medium, and the alloy has better corrosion resistance; zr has selective corrosion resistance to a medium with chloride ions, and can improve the corrosion resistance passivation effect of the alloy; y can improve the corrosion resistance of the alloy in a reducing medium.
2) The corrosion-resistant composite metal material is prepared by twice smelting and twice tempering, and the finally obtained structure is a large amount of martensite and a small amount of bainite, ferrite and residual austenite, so that the material has better internal toughness, plasticity and corrosion resistance.
Detailed Description
In order to make the technical solutions of the present invention better understood and enable those skilled in the art to practice the present invention, the following embodiments are further described, but the present invention is not limited to the following embodiments.
The test methods, in which specific conditions are not specified in the following examples, were carried out according to the methods and conditions conventional in the art.
Example 1
The corrosion-resistant composite metal material is characterized by comprising the following raw materials in percentage by mass: 0.3% of C, Si: 1.0%, Cr: 2.0%, Ca: 0.8%, La: 0.8%, Ni: 0.7%, B: 0.05%, Zr: 0.05%, Y: 0.08%, and the balance being Fe to make up to 100%;
the method is implemented according to the following steps:
step 1, weighing 0.3% of C and 0.3% of Si in percentage by mass: 1.0%, Cr: 2.0%, Ca: 0.8%, La: 0.8%, Ni: 0.7%, B: 0.05%, Zr: 0.05%, Y: 0.08%, and the balance being Fe to make up to 100%;
step 2, filling the raw materials weighed in the step 1 into a vacuum degree of 1.5 multiplied by 10-3Carrying out primary smelting in a Pa vacuum intermediate frequency induction furnace at the smelting temperature of 1350 ℃ for 2h to obtain primary smelting alloy after the smelting is finished;
step 3, crushing the primary smelting alloy in the step 2 into fragments with the particle size of 1cm, and then filling the fragments into a vacuum degree of 1.5 multiplied by 10-3Carrying out secondary smelting in a Pa vacuum intermediate frequency induction furnace at the smelting temperature of 1500 ℃ for 2h to obtain secondary smelting alloy, and hot-rolling the secondary smelting alloy into a blank;
step 4, heating the blank in the step 3 to 1000 ℃, preserving heat for 6 hours, and after heat preservation, cooling to room temperature in air cooling for quenching treatment to obtain a quenching treatment blank;
and 5, tempering the blank quenched in the step 4 at 700 ℃ for 10 hours to obtain the corrosion-resistant composite metal material.
Example 2
The corrosion-resistant composite metal material is characterized by comprising the following raw materials in percentage by mass: 0.4% of C, Si: 0.8%, Cr: 1.8%, Ca: 0.9%, La: 0.6%, Ni: 0.5%, B: 0.08%, Zr: 0.08%, Y: 0.07%, the balance being Fe to make up 100%;
the method is implemented according to the following steps:
step 1, weighing 0.4% of C and 0.4% of Si in percentage by mass: 0.8%, Cr: 1.8%, Ca: 0.9%, La: 0.6%, Ni: 0.5%, B: 0.08%, Zr: 0.08%, Y: 0.07%, the balance being Fe to make up 100%;
step 2, filling the raw materials weighed in the step 1 into a vacuum degree of 1.5 multiplied by 10-3Stirring in a Pa vacuum medium-frequency induction furnace to uniformly mix, then carrying out primary smelting at 1450 ℃ for 1.5h, and obtaining a primary smelting alloy after finishing smelting;
step 3, crushing the primary smelting alloy in the step 2 into fragments with the particle size of 2cm, and then filling the fragments into a vacuum degree of 1.5 multiplied by 10-3Carrying out secondary smelting in a Pa vacuum intermediate frequency induction furnace at the smelting temperature of 1520 ℃ for 1.5h to obtain secondary smelting alloy, and hot-rolling the secondary smelting alloy into a blank;
step 4, heating the blank in the step 3 to 1100 ℃, preserving heat for 5 hours, cooling the blank to room temperature through oil cooling after heat preservation is finished, and carrying out quenching treatment to obtain a quenching treated blank;
and 5, tempering the blank quenched in the step 4 at 730 ℃ for 9 hours to obtain the corrosion-resistant composite metal material.
Example 3
The corrosion-resistant composite metal material is characterized by comprising the following raw materials in percentage by mass: 0.5% of C, Si: 0.5%, Cr: 1.5%, Ca: 1.0%, La: 0.5%, Ni: 0.4%, B: 0.1%, Zr: 0.1%, Y: 0.06 percent, and the balance being Fe to complement 100 percent;
the method is implemented according to the following steps:
step 1, weighing 0.5% of C and 0.5% of Si in percentage by mass: 0.5%, Cr: 1.5%, Ca: 1.0%, La: 0.5%, Ni: 0.4%, B: 0.1%, Zr: 0.1%, Y: 0.06 percent, and the balance being Fe to complement 100 percent;
step 2, filling the raw materials weighed in the step 1 into a vacuum degreeIs 1.5X 10-3Carrying out primary smelting in a Pa vacuum intermediate frequency induction furnace at the smelting temperature of 1500 ℃ for 1h to obtain primary smelting alloy after the smelting is finished;
step 3, crushing the primary smelting alloy in the step 2 into fragments with the grain diameter of 3cm, and then filling the fragments into a vacuum degree of 1.5 multiplied by 10-3Carrying out secondary smelting in a Pa vacuum intermediate frequency induction furnace at the smelting temperature of 1550 ℃ for 1h to obtain secondary smelting alloy after the smelting is finished, and hot-rolling the secondary smelting alloy into a blank;
step 4, heating the blank in the step 3 to 1200 ℃, preserving heat for 3 hours, cooling the blank to room temperature through oil cooling after heat preservation is finished, and carrying out quenching treatment to obtain a quenching treated blank;
and 5, tempering the blank quenched in the step 4 at 720 ℃ for 8 hours to obtain the corrosion-resistant composite metal material.
The corrosion-resistant composite metal materials with good performance are prepared in the embodiments 1 to 3, and the performance of the corrosion-resistant composite metal materials prepared in the embodiments 1 to 3 is tested, and the test results are shown in table 1.
TABLE 1 results of the Performance test of examples 1 to 3
Figure BDA0002271727220000061
As shown in Table 1, the corrosion-resistant composite metal material prepared by the method has the advantages that the hardness can reach more than 60HRC, the corrosion resistance is good, the tensile strength reaches more than 1000MPa, the elongation rate reaches more than 9%, the performance detection result on the material is good, and the use requirement of the corrosion-resistant composite metal material can be met.
It should be noted that when the following claims refer to numerical ranges, it should be understood that both endpoints of each numerical range and any numerical value between the two endpoints can be selected, and since the steps and methods adopted are the same as those in embodiments 1 to 3, the present invention describes preferred embodiments in order to prevent redundant description, but once a person skilled in the art knows the basic inventive concept, other changes and modifications can be made to these embodiments. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (5)

1. The corrosion-resistant composite metal material is characterized by comprising the following raw materials in percentage by mass: 0.3-0.5% of C, Si: 0.5 to 1.0%, Cr: 1.5-2.0%, Ca: 0.8-1.0%, La: 0.5 to 0.8%, Ni: 0.4-0.7%, B: 0.05 to 0.1%, Zr: 0.05-0.1%, Y: 0.06-0.08%, and the balance of Fe.
2. The corrosion-resistant composite metal material according to claim 1, wherein the raw materials comprise the following components in percentage by mass: 0.4% of C, Si: 0.8%, Cr: 1.8%, Ca: 0.9%, La: 0.6%, Ni: 0.5%, B: 0.08%, Zr: 0.08%, Y: 0.07%, the balance being Fe.
3. The method for preparing the corrosion-resistant composite metal material according to claim 1, which is implemented by the following steps:
step 1, weighing 0.3-0.5% of C and 0.5% of Si in percentage by mass: 0.5 to 1.0%, Cr: 1.5-2.0%, Ca: 0.8-1.0%, La: 0.5 to 0.8%, Ni: 0.4-0.7%, B: 0.05 to 0.1%, Zr: 0.05-0.1%, Y: 0.06-0.08%, and the balance being Fe to make up 100%;
step 2, putting the raw materials weighed in the step 1 into a smelting furnace for primary smelting, wherein the smelting temperature is 1350-1500 ℃, the smelting time is 1-2 hours, and a primary smelting alloy is obtained after the smelting is finished;
step 3, putting the primary smelting alloy obtained in the step 2 into a smelting furnace for secondary smelting, wherein the smelting temperature is 1500-1550 ℃, the smelting time is 1-2 hours, the secondary smelting alloy is obtained after smelting is finished, and the secondary smelting alloy is hot-rolled into a blank;
step 4, heating the blank in the step 3 to 1000-1200 ℃, then preserving heat for 3-6 h, cooling to room temperature after heat preservation, and carrying out quenching treatment to obtain a quenching treated blank;
and 5, tempering the blank quenched in the step 4 at 700-750 ℃ for 8-10 hours to obtain the corrosion-resistant composite metal material.
4. The method for preparing a corrosion-resistant composite metal material according to claim 3, wherein the smelting furnace used in the step 2 and the smelting furnace used in the step 3 are vacuum medium frequency induction furnaces.
5. The method of claim 4, wherein the vacuum degree of the vacuum intermediate frequency induction furnace is 1.5 x 10-3Pa。
CN201911107388.4A 2019-11-13 2019-11-13 Corrosion-resistant composite metal material and preparation method thereof Pending CN110699603A (en)

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Application publication date: 20200117