A kind of α-β type high strength, high impact toughness titanium alloy and preparation method thereof

A technology of impact toughness and titanium alloy, applied in the field of titanium alloy, can solve the problems of high cost and small application range

Active Publication Date: 2021-09-10
WESTERN TITANIUM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the consideration of the absolute safety of products, the use of recycled materials is strictly prohibited in the aviation and aerospace fields. In the civil field, due to the relatively high cost of TA15 titanium alloy and its strength is equivalent to that of TC4, the current application range is small.

Method used

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  • A kind of α-β type high strength, high impact toughness titanium alloy and preparation method thereof
  • A kind of α-β type high strength, high impact toughness titanium alloy and preparation method thereof
  • A kind of α-β type high strength, high impact toughness titanium alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The α-β type high-strength, high-impact-toughness titanium alloy of this embodiment is composed of the following mass percentages: Al 5%, Zr 1.5%, Mo 0.8%, V 1%, Fe 2%, Cr 3%, and the balance is Ti and unavoidable impurities.

[0037] The preparation method of the α-β type high-strength, high-impact-toughness titanium alloy of this embodiment is as follows: the electrode prepared by TA15 reclaimed material is mixed with recycled pure zirconium shavings, iron-molybdenum master alloy, aluminum beans, iron nails, metal chromium, and titanium sponge The mixed and pressed electrodes are assembled and welded to prepare a smelting electrode, wherein the mass content of TA15 recycled material in the smelting electrode is 50%, and then smelted in a vacuum consumable electric arc furnace three times to obtain a titanium alloy ingot; the titanium alloy ingot is passed through After mechanical processing and subsequent thermal processing, a titanium alloy square rod with a side len...

Embodiment 2

[0041] The α-β type high-strength, high-impact-toughness titanium alloy of this embodiment is composed of the following mass percentages: Al 5.1%, Zr 1.8%, Mo 1.2%, V 1.6%, Fe 1.3%, Cr 2.0%, the balance For Ti and unavoidable impurities.

[0042] The preparation method of the α-β type high-strength, high-impact-toughness titanium alloy of this embodiment is as follows: the electrode prepared by TA15 reclaimed material is mixed with recycled pure zirconium shavings, iron-molybdenum master alloy, aluminum beans, iron nails, metal chromium, and titanium sponge The mixed and pressed electrodes are assembled and welded to prepare a smelting electrode, wherein the mass content of TA15 recycled material in the smelting electrode is 70%, and then smelted in a vacuum consumable electric arc furnace three times to obtain a titanium alloy ingot; the titanium alloy ingot is passed through After mechanical processing and subsequent thermal processing, a titanium alloy rod with a diameter o...

Embodiment 3

[0045] The α-β type high-strength, high-impact-toughness titanium alloy of this embodiment is composed of the following components by mass percentage: Al4.5%, Zr 2.5%, Mo 2.5%, V 0.8%, Fe 0.8%, Cr 3.0%, the balance For Ti and unavoidable impurities.

[0046] The preparation method of the α-β type high-strength, high-impact-toughness titanium alloy of this embodiment is as follows: the electrode prepared by TA15 reclaimed material is mixed with recycled pure zirconium shavings, iron-molybdenum master alloy, aluminum beans, iron nails, metal chromium, and titanium sponge The mixed and pressed electrodes are assembled and welded to prepare a smelting electrode, wherein the mass content of TA15 recycled material in the smelting electrode is 50%, and then smelted in a vacuum consumable electric arc furnace three times to obtain a titanium alloy ingot; the titanium alloy ingot is passed through After mechanical processing and subsequent thermal processing, a titanium alloy rod with ...

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Abstract

The invention discloses an α-β type titanium alloy with high strength and high impact toughness, which is composed of the following components in mass percentage: Al4.5%-6.0%, Zr1.5%-2.5%, Mo0.5%-2.5%, V0.5%~2.0%, Fe0.5%~2.0%, Cr1.5%~3.0%, the balance is Ti and unavoidable impurities; the invention also discloses a preparation method of titanium alloy, the method is based on A large number of TA15 recycled materials are used as raw materials. The titanium alloy of the present invention effectively improves its strength, plasticity and toughness by controlling Moeq and Aleq, and satisfies the matching of high strength and toughness. phase, which enhances the coupling strengthening effect and improves the matching of strength and toughness; the invention uses TA15 reclaimed materials as raw materials, which reduces the preparation cost and solves the problem of recycling TA15 residues.

Description

technical field [0001] The invention belongs to the technical field of titanium alloys, in particular to an α-β type titanium alloy with high strength and high impact toughness and a preparation method thereof. Background technique [0002] Titanium has many characteristics: low density, high specific strength, corrosion resistance, wide temperature resistance zone, and good welding performance. It is an ideal structural material and plays an extremely important role in the development of high-tech national defense, weaponry and civilian industries. . Titanium alloys are widely used in military and commercial fields such as aviation, aerospace, ships, weapons, and chemicals, and there is a trend of gradual increase. However, the high price of titanium alloys is generally 8 to 10 times that of steel, which seriously affects its application in fields with strict cost control requirements such as weapons, ships and chemicals. To make matters worse, in recent years, the price ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/03
Inventor 侯智敏李维唐进邢秋丽戴毅欧阳文博康聪王兴刘华贠鹏飞华瑶谢英杰王超男张智王彦皓
Owner WESTERN TITANIUM TECH
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