CN112410595A - High-strength heat-resistant Ti3Microwave sintering preparation method of Al-based alloy - Google Patents
High-strength heat-resistant Ti3Microwave sintering preparation method of Al-based alloy Download PDFInfo
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- CN112410595A CN112410595A CN201910793361.9A CN201910793361A CN112410595A CN 112410595 A CN112410595 A CN 112410595A CN 201910793361 A CN201910793361 A CN 201910793361A CN 112410595 A CN112410595 A CN 112410595A
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- 239000000956 alloy Substances 0.000 title claims abstract description 38
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000005245 sintering Methods 0.000 title description 6
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000009768 microwave sintering Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000000498 ball milling Methods 0.000 claims abstract description 6
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 6
- 239000010955 niobium Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 4
- 229910000048 titanium hydride Inorganic materials 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 3
- 238000005272 metallurgy Methods 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 230000000704 physical effect Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/047—Making non-ferrous alloys by powder metallurgy comprising intermetallic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/001—Starting from powder comprising reducible metal compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
- C22C1/0458—Alloys based on titanium, zirconium or hafnium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1054—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by microwave
Abstract
The invention discloses high-strength heat-resistant Ti3The microwave sintering preparation method of the Al-based alloy comprises the following steps: utilizing ball milling to mix TiH with a certain mass ratio2Uniformly mixing the powder, Al powder, Si powder and Nb powder, mechanically pressing by using a die, and finally tabletting the mixture at different constant temperatures within the range of 400-900 ℃ for microwave sintering to realize the optimization of alloy microstructure and physical properties; the high-strength heat-resistant Ti prepared by microwave sintering of the invention3The Al-based alloy material also has excellent room temperature plasticity.
Description
Technical Field
The present invention relates to a Ti alloy having both excellent room temperature plasticity and high temperature strength3A microwave sintering preparation method of an Al-based alloy material.
Background
Ti3The Al-based alloy has the outstanding characteristics of low density, high specific strength, good oxidation resistance and the like, and is considered as an ideal light-density high-temperature structural material for realizing performance improvement by reducing structural mass. However, as an intermetallic compound material, the long-range ordered arrangement of atoms and the coexistence of metallic bonds/covalent bonds bring about excellent high-temperature strength, and also cause the limited number of actuatable slip systems, large dislocation Berth vector of superstructure, difficulty in dislocation cross slip, and make the alloy plastic and toughAnd is low. Solve the problem of Ti3The brittleness of Al alloy and the improvement of plastic processing deformability are the prerequisites for realizing practicability.
The microwave metallurgical technology is a technology for sintering materials by utilizing microwave heating, and is an important technical means for quickly preparing high-quality new materials and preparing traditional materials with new properties. Compared with the workpiece produced by the traditional sintering process, the workpiece produced by microwave sintering has higher density, hardness and obdurability. The microwave heating energy enables the workpiece to be heated uniformly, the heating rate can reach 1500 ℃ per minute, the high efficiency and the energy saving can be realized, and the high temperature of more than 2000 ℃ can be realized even by little input energy for some materials.
Increase Ti3The method for the performance of the Al-based alloy mainly comprises the following steps: alloying, controlling the uniformity of components, heat treatment and controlling the content of interstitial elements. The workpiece made by microwave heating has higher density, hardness and obdurability. Short sintering times produce a uniform fine grain microstructure with fewer internal pores and pore shapes that are more rounded than conventional sintering, thereby providing better ductility and toughness. Meanwhile, the residence time at high temperature is greatly shortened, the growth of crystal grains is inhibited, so that the crystal grains can be refined to a certain degree, and the Ti can be effectively improved3The Al-based alloy has room temperature plasticity and improves the alloy performance.
Disclosure of Invention
The invention aims to provide high-strength heat-resistant Ti3The preparation method of the Al-based alloy comprises the step of ball-milling TiH with a certain mass ratio2Uniformly mixing the powder, Al powder, Si powder and Nb powder; the mixture is sintered by microwave to form an alloy, and the mixture is sintered at different temperatures by adjusting the microwave power, so that the microstructure and the physical property of the alloy are optimized; the resultant was dried in a vacuum oven to obtain Ti3An Al-based alloy. The invention adopts high-strength heat-resistant Ti prepared by microwave technology3The Al-based alloy has simple preparation method and lower cost.
In order to achieve the purpose, the invention provides the following technical scheme: mix TiH2Mixing the powder, the Al powder, the Si powder and the Nb powder according to the mass ratio of 60 to 25 to 5 to 10; ball milling for 12h to obtain powderUniformly mixing the powders; placing the mixed powder in a microwave sintering furnace, adjusting the microwave power to calcine the mixture for 10min at the temperature of 400-950 ℃ to prepare Ti3An Al-based alloy; after the alloy is cooled to the room temperature by controlling the temperature reduction for 8 hours, the alloy is respectively washed for 3 times by deionized water and alcohol; drying for 10h at 60 ℃ in a vacuum oven.
Compared with the prior art, the invention has the following beneficial effects: the invention provides high-strength heat-resistant Ti3The preparation method of the Al-based alloy realizes Ti by regulating and controlling microwave sintering power3Optimizing the microstructure and physical properties of the Al-based alloy; the alloy material of the invention has excellent room temperature plasticity and high temperature strength.
Drawings
FIG. 1 is SEM images of alloys obtained at different temperatures in the present invention: (a)400 ℃; (b)500 ℃; (c)600 ℃ (d)700 ℃; (e)800 ℃ (f)900 ℃;
FIG. 2 is a high temperature tensile curve of the alloy material obtained at different temperatures in the present invention.
Detailed Description
High-strength heat-resistant Ti3FIG. 1 is SEM images of the alloy obtained at different temperatures, and FIG. 2 is a high-temperature tensile curve at different temperatures. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1
Ti3The preparation method of the Al-based alloy comprises the following steps: mix TiH2Mixing the powder, the Al powder, the Si powder and the Nb powder according to the mass ratio of 60 to 25 to 5 to 10; ball milling for 12h, and uniformly mixing the powder; placing the mixed powder in a microwave high-temperature sintering furnace, adjusting the microwave power, and calcining the mixture at 400 ℃ for 10min to prepare Ti3An Al-based alloy; after the alloy is cooled to the room temperature by controlling the temperature reduction for 8 hours, the alloy is respectively washed for 3 times by deionized water and alcohol; drying for 10h at 60 ℃ in a vacuum oven.
Example 2
The microwave power was adjusted to sinter the mixture at a temperature of 500 c, otherwise as in example 1.
Example 3
The mixture was sintered at a temperature of 600 c as in example 1.
Example 4
The mixture was sintered at a temperature of 700 c, otherwise as in example 1.
Example 5
The mixture was sintered at a temperature of 800 ℃ as in example 1.
Example 6
The mixture was sintered at 900 ℃ as in example 1.
FIG. 1(a) shows that Ti3The Al-based alloy consists of a large amount of lath martensite precipitated phases; with the temperature rise, martensite does not change obviously, but the size and the density of precipitated particles are gradually increased; at 900 ℃ (example 6), the structure of the alloy is changed significantly, ferrite is generated, and a martensite-delta ferrite dual-phase structure is formed.
The high temperature tensile image of fig. 2 shows that the tensile curve of the alloy material (example 3) after microwave sintering at 600 ℃ has a higher slope in the linear stage, which indicates that the elastic modulus of the alloy is the largest at 600 ℃ and the alloy has the best mechanical properties.
By utilizing the technical scheme of the invention, similar technical schemes are designed, and the technical effects are achieved, which all fall into the protection scope of the invention.
Claims (5)
1. High-strength heat-resistant Ti3The preparation method of the Al-based alloy is characterized in that the high-strength heat-resistant Ti is prepared by utilizing the microwave metallurgy technology3The Al-based alloy is prepared by the following process steps:
a. mix TiH2Mixing the powder, Al powder, Si powder and Nb powder according to a mass ratio;
b. ball milling to mix the powder evenly;
c. placing the mixed powder in a microwave oven, adjusting the microwave power to calcine the mixture for 10min at the temperature of 400-950 ℃ to prepare Ti3An Al-based alloy;
d. cooling the container system to room temperature, and washing the alloy with deionized water and alcohol for 3 times respectively;
e. drying for 10h at 60 ℃ in a vacuum oven.
2. The process of claim 1, process step a, TiH2The mass ratio of the powder to the Al powder to the Si powder to the Nb powder is 60 to 25 to 5 to 10.
3. The process according to claim 1, wherein in process step b, the powder is homogeneously mixed for a ball milling time of 12 h.
4. The preparation method according to claim 1, wherein in the step c, the microwave sintering container is a silicon carbide crucible with wave-absorbing property.
5. The preparation method according to claim 1, wherein in the process step d, the cooling mode is controlled cooling for 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793361.9A CN112410595A (en) | 2019-08-23 | 2019-08-23 | High-strength heat-resistant Ti3Microwave sintering preparation method of Al-based alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793361.9A CN112410595A (en) | 2019-08-23 | 2019-08-23 | High-strength heat-resistant Ti3Microwave sintering preparation method of Al-based alloy |
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| CN112410595A true CN112410595A (en) | 2021-02-26 |
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| CN201910793361.9A Pending CN112410595A (en) | 2019-08-23 | 2019-08-23 | High-strength heat-resistant Ti3Microwave sintering preparation method of Al-based alloy |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632148A (en) * | 2003-12-24 | 2005-06-29 | 中国科学院金属研究所 | Method for preparing titanium-aluminum base alloy |
| US20070269331A1 (en) * | 2003-12-27 | 2007-11-22 | Advance Materials Products, Inc. (Adma Products, Inc.) | Fully-dense discontinuously-reinforced titanium matrix composites and method for manufacturing the same |
| CN101245431A (en) * | 2008-03-25 | 2008-08-20 | 长春工业大学 | Gamma-group Ti-Al alloy material with high-temperature resistance oxidation and manufacture method thereof |
| CN102747245A (en) * | 2012-07-06 | 2012-10-24 | 淮阴工学院 | Preparation method of medical porous titanium and titanium alloy |
| CN102888530A (en) * | 2012-05-17 | 2013-01-23 | 吉林省必晟科技开发有限公司 | Method for preparing TiAl-based alloy |
| US20150328684A1 (en) * | 2007-06-11 | 2015-11-19 | Advance Material Products, Inc. | Manufacture of near-net shape titanium alloy articles from metal powders by sintering with presence of atomic hydrogen |
-
2019
- 2019-08-23 CN CN201910793361.9A patent/CN112410595A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632148A (en) * | 2003-12-24 | 2005-06-29 | 中国科学院金属研究所 | Method for preparing titanium-aluminum base alloy |
| US20070269331A1 (en) * | 2003-12-27 | 2007-11-22 | Advance Materials Products, Inc. (Adma Products, Inc.) | Fully-dense discontinuously-reinforced titanium matrix composites and method for manufacturing the same |
| US20150328684A1 (en) * | 2007-06-11 | 2015-11-19 | Advance Material Products, Inc. | Manufacture of near-net shape titanium alloy articles from metal powders by sintering with presence of atomic hydrogen |
| CN101245431A (en) * | 2008-03-25 | 2008-08-20 | 长春工业大学 | Gamma-group Ti-Al alloy material with high-temperature resistance oxidation and manufacture method thereof |
| CN102888530A (en) * | 2012-05-17 | 2013-01-23 | 吉林省必晟科技开发有限公司 | Method for preparing TiAl-based alloy |
| CN102747245A (en) * | 2012-07-06 | 2012-10-24 | 淮阴工学院 | Preparation method of medical porous titanium and titanium alloy |
Non-Patent Citations (3)
| Title |
|---|
| 王志 等: "氢化钛粉低温真空反应制备TiAl合金粉的研究", 《功能材料》 * |
| 肖伟豪 等: "Si对TiAl合金高温抗氧化性能的影响", 《北京航空航天大学学报》 * |
| 项宏福 等: "《钛铝金属间化合物的高温特性及疲劳行为研究》", 31 December 2018 * |
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Application publication date: 20210226 |