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Zirconium-containing TB10 titanium alloy and preparation method thereof

A titanium alloy and alloy technology, applied in the field of titanium alloy and its preparation, can solve the problems of poor machining performance, poor plasticity and forgeability at room temperature, and high resistance to forging deformation

Inactive Publication Date: 2018-10-02
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with α+β titanium alloy, its room temperature plasticity and forgeability in high-strength state are poor, which is a shortcoming of the coexistence of high-alloyed metastable β-type titanium alloy. Therefore, the forging deformation resistance is large and the machinability is poor.

Method used

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  • Zirconium-containing TB10 titanium alloy and preparation method thereof
  • Zirconium-containing TB10 titanium alloy and preparation method thereof
  • Zirconium-containing TB10 titanium alloy and preparation method thereof

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preparation example Construction

[0040] The present invention also provides a preparation method of the zirconium-containing TB10 titanium alloy, comprising the following steps:

[0041] Melting the alloy raw material according to the composition ratio of the zirconium-containing TB10 titanium alloy to obtain an alloy ingot;

[0042] performing solid solution treatment on the alloy ingot to obtain a solid solution alloy;

[0043] The solid solution alloy is annealed to obtain a zirconium-containing TB10 titanium alloy.

[0044] According to the composition distribution ratio of the zirconium-containing TB10 titanium alloy, the invention melts the alloy raw material to obtain the alloy ingot. In the present invention, there is no special limitation on the type of the alloy raw material, and the alloy raw material for smelting titanium alloy well known to those skilled in the art can be used. In the present invention, the alloy raw material preferably includes titanium, zirconium, molybdenum, vanadium, chromi...

Embodiment 1

[0061] Soak 76g of industrial-grade titanium sponge, 10g of zirconium sponge, 4.5g of pure molybdenum, 5.5g of pure vanadium, 1.5g of pure chromium, and 2.5g of pure aluminum in absolute ethanol, ultrasonically clean and air-dry;

[0062] Put the above-mentioned raw materials after pretreatment into the water-cooled copper crucible in the non-consumable vacuum arc melting furnace, and the vacuum degree is 5×10 -3 Pa, non-consumable vacuum smelting under a nitrogen atmosphere with a pressure of 0.06MPa, the melting temperature is 2500°C, the working current during the smelting process is 500A, the ingot is turned over six times, and the ingot is smelted for 3 minutes each time to obtain an alloy ingot . After the alloy ingot is solid solution treated at 850°C for 0.5 hours, it is quickly quenched in water to obtain a solid solution alloy;

[0063] The solid solution alloy is annealed in a nitrogen atmosphere, the annealing temperature is 450 ° C, the holding time is 2.5 hours,...

Embodiment 2

[0066] Soak 65g of industrial-grade titanium sponge, 20g of zirconium sponge, 5.0g of pure molybdenum, 5.0g of pure vanadium, 2.0g of pure chromium, and 3.0g of pure aluminum in absolute ethanol, ultrasonically clean and air-dry;

[0067] Put the above-mentioned raw materials after pretreatment into the water-cooled copper crucible in the non-consumable vacuum arc melting furnace, and the vacuum degree is 5×10 -3 Pa, non-consumable vacuum smelting under a nitrogen atmosphere with a pressure of 0.06MPa, the smelting temperature is 2500°C, the working current during the smelting process is 500A, the smelting time is 3 minutes, and the ingot is turned over six times. Minutes to obtain alloy ingots. After the alloy ingot is solid solution treated at 840°C for 0.5 hours, it is quickly quenched in water to obtain a solid solution alloy;

[0068] The solid solution alloy is annealed in a nitrogen atmosphere, the annealing temperature is 400 ° C, the holding time is 2 hours, cooled t...

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Abstract

The invention provides a zirconium-containing TB10 titanium alloy which comprises, in weight percent, 34%-76% of Ti, 10%-50% of Zr, 4.5%-5.5% of Mo, 4.5%-5.5% of V, 1.5%-2.5% of Cr and 2.5%-3.5% of Al. According to the titanium alloy, a zirconium element is added, heat insulation and generation of a tempering omega phase can be effectively restrained, and Zr and Ti belong to an IV B group andhave same outermost layer electron configuration modes and similar mechanical and physical and chemical performances. The zirconium-containing titanium alloy has higher strength and good plasticity. According to embodiment records, the high-strength titanium alloy and an actual measurement TB10 titanium alloy are compared, and the tensile strength can be maximally improved by 49.16%.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a titanium alloy and a preparation method thereof. Background technique [0002] Titanium alloy TB10 is a near-β high-strength and high-toughness titanium alloy, which has a series of advantages such as high specific strength, good fracture toughness, high hardenability, excellent thermal processing performance and machining performance, low processing temperature and low deformation resistance. , is an ideal structural material. Compared with α+β titanium alloy, its room temperature plasticity and forgeability in high-strength state are poor, which is a shortcoming of the coexistence of high-alloyed metastable β-type titanium alloy. Therefore, the forging deformation resistance is large and the machinability is poor. . [0003] However, in the actual application process, it is often required that the alloy has high strength and good machinability at the same time. Contents of...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C16/00C22C30/00C22C1/02C22F1/18C22F1/16
CPCC22C14/00C22C1/02C22C16/00C22C30/00C22F1/16C22F1/183C22F1/186
Inventor 刘日平陈博涵刘曙光马明臻景勤张新宇张世良
Owner YANSHAN UNIV
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