Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy and preparation method thereof

A ti-al-zr-mo-v, titanium alloy technology, applied in the field of Ti-Al-Zr-Mo-V series medium-strength high-plastic titanium alloy and its preparation, can solve the problem of poor uniform plastic deformation ability and dimensional accuracy Difficult to control, difficult plastic processing and forming, etc., to achieve the effect of good strength and plasticity, favorable deformation and increased plasticity

Active Publication Date: 2016-02-10
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the above data, it can be seen that the plasticity of TC4 alloy is relatively low, the ability of uniform plastic deformation is poor, the plastic forming is difficult, a

Method used

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  • Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy and preparation method thereof
  • Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy and preparation method thereof
  • Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0031] Example 1

[0032] According to the following formula: Al4.96wt%, Zr2.01wt%, Mo3.05wt%, V1.96wt%, the balance is Ti and unavoidable impurities, the electrode is prepared, and the ingot is obtained by vacuum consumable melting for 3 times. The phase transition point of the obtained alloy is 915°C. After the forging is completed, the forgings are sampled and kept at 875°C, 825°C, 770°C, 720°C, and 670°C for 1 hour, and then cooled in air, and then processed into experimental samples for tensile performance testing. The tensile properties at different heat treatment temperatures such as figure 1 As shown in the figure, it can be seen that the strength and plasticity of the alloy after heat treatment can reach the design goals. Choose 0.01s -1 ,0.1s -1 ,1s -1 ,10s -1 ,20s -1 These 5 sets of strain rates were subjected to room temperature compression tests on the Gleeble testing machine, and the room temperature strain rate sensitivity index m as shown in Table 1 was measured, ...

Example Embodiment

[0033] Example 2

[0034] According to the following formula: Al 4.98wt%, Zr 0.98wt%, Mo2.03wt%, V1.02wt%, the balance is Ti and inevitable impurities, the electrode is prepared, and the ingot is obtained by vacuum consumable melting for 3 times. The phase transition point of the obtained alloy is 955℃. After the forging is completed, samples are taken of the forgings, kept at 925℃, 875℃, 835℃, 770℃, and 720℃ for 1 hour, and then cooled in air, and then processed into experimental samples for tensile performance testing. The tensile properties at different heat treatment temperatures such as figure 2 As shown in the figure, it can be seen that the strength and plasticity of the alloy after heat treatment can reach the design goals. Choose 0.01s -1 ,0.1s -1 ,1s -1 ,10s -1 ,20s -1 These 5 sets of strain rates were subjected to room temperature compression tests on the Gleeble testing machine, and the room temperature strain rate sensitivity index m as shown in Table 1 was measured...

Example Embodiment

[0035] Example 3

[0036] According to the following formula: Al4.08wt%, Zr2.96wt%, Mo3.13wt%, V1.08wt%, the balance is Ti and inevitable impurities, the electrode is prepared, and the ingot is obtained by vacuum consumable melting for 3 times. The phase transition point of the obtained alloy is 915°C. After the forging is completed, the forgings are sampled and kept at 885°C, 835°C, 770°C, 720°C, and 670°C for 1 hour, and then cooled in air, and then processed into experimental samples for tensile performance testing. The tensile properties at different annealing temperatures such as image 3 As shown in the figure, it can be seen that the strength and plasticity of the alloy after heat treatment can reach the design goals. Choose 0.01s -1 ,0.1s -1 ,1s -1 ,10s -1 ,20s -1 These 5 sets of strain rates were subjected to room temperature compression tests on the Gleeble testing machine, and the room temperature strain rate sensitivity index m as shown in Table 1 was measured, and th...

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Abstract

The invention discloses a Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy and a preparation method thereof, and belongs to the technical field of titanium alloy materials. The titanium alloy comprises, by weight, 3.0%-5.0% of Al, 1.0%-3.5% of Zr, 2.0%-4.5% of Mo, 1.0%-3.5% of V, and the balance Ti and unavoidable impurity elements. According to the Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy and the preparation method thereof, the Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy is obtained by adding the alloy elements of Mo and Zr and adjusting the proportion of Al equivalent weight and Mo equivalent weight properly, the extension strength of the Ti-Al-Zr-Mo-V system medium-strength high-plasticity titanium alloy is 800 MPa to 1000 MPa, and the extension rate is greater than 18%; the strength and the plasticity are matched well, and excellent machinability and excellent cold-forming performance are obtained.

Description

Technical field: [0001] The invention relates to the technical field of titanium alloy materials, in particular to a Ti-Al-Zr-Mo-V series medium-strength high-plasticity titanium alloy and a preparation method thereof. Background technique: [0002] Due to its high specific strength and good corrosion resistance, titanium alloys have very important applications in the aerospace field. Among them, titanium alloys with a tensile strength in the range of 700MPa-1000MPa are usually defined as medium-strength titanium alloys. They have good comprehensive properties, not only high strength, but also sufficient plasticity and excellent welding performance. TC4 (Ti-6Al-4V), as the most widely used medium-strength titanium alloy, is mainly used in the aviation industry to manufacture fans and compressor discs and blades of engines, as well as important bearings such as beams, joints and bulkheads in aircraft structures. force components. According to the national standard GB / T2965-...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22F1/18
Inventor 彭霜吉海宾邱建科雷家锋刘羽寅
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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