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A kind of high dynamic performance titanium alloy and preparation method thereof

A titanium alloy, high dynamic technology, applied in the field of alloys, can solve the problems of low dynamic flow stress and low dynamic plastic strain performance of titanium alloys, reduce the adiabatic shear tendency, inhibit the high temperature eutectoid reaction, and improve the strengthening effect. Effect

Active Publication Date: 2022-04-08
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a titanium alloy with high dynamic performance, which solves the problems of low dynamic flow stress and low dynamic plastic strain performance of titanium alloys in the prior art

Method used

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  • A kind of high dynamic performance titanium alloy and preparation method thereof
  • A kind of high dynamic performance titanium alloy and preparation method thereof
  • A kind of high dynamic performance titanium alloy and preparation method thereof

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Experimental program
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preparation example Construction

[0029] A method for preparing a titanium alloy with high dynamic performance, comprising the following steps:

[0030] Step 1. Mix titanium sponge, aluminum-molybdenum alloy, aluminum-iron alloy, aluminum-chromium alloy, and aluminum beans, and use a press and a mold to press into a strip-shaped electrode block. The mass percentage of each element in the electrode block is: Al element 6.0-9.0 %, Mo element 2.5-5.0%, Cr element 2.0-4.5%, Fe element 1.0-3.5%, O element ≤0.20%, C element ≤0.10%, N element ≤0.10%, H element ≤0.05%, and the balance is Ti element, the sum of the mass percentages of the above components is 100%;

[0031] Step 2. Use a vacuum plasma welding box to weld the electrode block into a long strip electrode;

[0032] Step 3. The electrode is smelted into an alloy ingot through 2-3 vacuum consumable arcs, the smelting current is 5-20KA, and the smelting voltage is 10-45V;

[0033] Step 4, forging the alloy ingot to obtain a bar;

[0034] Step 4.1: Upsetting...

Embodiment 1

[0044] Preparation of Ti-6.2Al-4.8Mo-4.30Cr-1.20Fe Titanium Alloy Rods

[0045] Step 1. Mix titanium sponge, aluminum-molybdenum alloy, aluminum-iron alloy, aluminum-chromium alloy, and aluminum beans, and use a press and mold to press into a strip-shaped electrode block;

[0046] Step 2. Use a vacuum plasma welding box to weld the electrode block into a long strip electrode;

[0047]Step 3. The electrode is smelted into an alloy ingot through 3 vacuum consumable arcs, the smelting current is 9-17KA, and the smelting voltage is 21-41V;

[0048] Step 4, skinning the alloy ingot, testing for flaws, sawing the riser, and then sampling for chemical composition testing, see Table 2;

[0049] Table 2 ingot chemical composition test results (wt%)

[0050] Location Al Mo Cr Fe O C N H Ti superior 6.15 4.74 4.28 1.12 0.17 0.05 0.04 0.01 margin middle 6.18 4.83 4.39 1.18 0.14 0.03 0.05 0.01 margin Down 6.23 4.81 4.31 1.23 0....

Embodiment 2

[0058] Preparation of Ti-8.7Al-4.5Mo-2.30Cr-3.30Fe Titanium Alloy Rods

[0059] Step 1. Mix titanium sponge, aluminum-molybdenum alloy, aluminum-iron alloy, aluminum-chromium alloy, and aluminum beans, and use a press and mold to press into a strip-shaped electrode block;

[0060] Step 2. Use a vacuum plasma welding box to weld the electrode block into a long strip electrode;

[0061] Step 3. The electrode is melted into an alloy ingot through two vacuum consumable arcs, the melting current is 6-18KA, and the melting voltage is 18-38V;

[0062] Step 4, skinning the alloy ingot, testing for flaws, sawing the riser, and then sampling for chemical composition testing, see Table 4;

[0063] Table 4 ingot chemical composition testing results (wt%)

[0064] Location Al Mo Cr Fe O C N H Ti superior 8.41 4.42 2.31 3.38 0.11 0.05 0.02 0.01 margin middle 8.52 4.49 2.35 3.31 0.09 0.02 0.02 0.01 margin Down 8.49 4.50 2.27 3.29 ...

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Abstract

The invention discloses a titanium alloy with high dynamic performance and a preparation method thereof, comprising: Al 6.0-9.0%, Mo 2.5-5.0%, Cr 2.0-4.5%, Fe 1.0-3.5%, O≤0.20%, C≤0.10 %, N≤0.10%, H≤0.05%, the balance is Ti, and the sum of the mass percentages of the above components is 100%. Mix titanium sponge, aluminum-molybdenum alloy, aluminum-iron alloy, aluminum-chromium alloy, and aluminum beans, and press them into electrode blocks, weld the electrode blocks into electrodes, melt the electrodes into alloy ingots, and forge the alloy ingots to obtain Rods are heat-treated to obtain finished rods. Titanium alloy materials with excellent dynamic properties can be obtained (10 ‑3 S ‑1 Under the condition of level strain rate, dynamic flow stress ≥ 1600MPa, dynamic plastic strain ≥ 0.30).

Description

technical field [0001] The invention belongs to the technical field of alloys, relates to a titanium alloy with high dynamic performance, and also relates to a preparation method of the titanium alloy. Background technique [0002] Compared with most ferrous metals, titanium alloy has a great advantage in density. Compared with aluminum and magnesium alloys, its room temperature strength and high temperature strength are much higher, plus its excellent thermal strength, corrosion resistance and welding Performance, in aerospace, weapons industry, shipbuilding, chemical industry, medical, automotive and energy and other fields have been more and more widely used. In foreign countries, military powers such as the United States and Russia are carrying out extensive research on the application of titanium alloy materials on missile warheads. For example, Russia's "X-31A" and "Musquite" supersonic anti-ship missiles all use titanium alloy warheads. , so that the filling factor o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22B9/20C22C1/03C22F1/18C21D8/06C21D9/00
CPCC22C14/00C22B9/20C22C1/03C22F1/183C21D8/06C21D9/0075
Inventor 刘向宏毛友川郝芳辛社伟杜予晅张慧杰王宇张胜王凯旋陈海生冯勇张平祥
Owner 西部超导材料科技股份有限公司