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High-strength high-toughness titanium alloy

A high-toughness, titanium alloy technology, applied in the field of titanium alloys, can solve the problems of instability, unresolved, difficult to achieve elongation of titanium alloys, and achieve long service life, good grain refinement structure, good mechanical properties And the effect of processing and forming performance

Inactive Publication Date: 2008-03-26
辽宁峰阁钛业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: golf heads have high requirements on the strength, plasticity and toughness of the hitting surface. At present, the Ti-6Al-4V material produced in China has a tensile strength ≥ 1000Mpa, especially when it is higher than 1100Mpa, the elongation of titanium alloy is difficult to achieve. 15%, and unstable
In other domestic industries, there are also requirements for the strength and toughness of Ti-6Al-4V, including stability, but none of them can be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The alloy material is prepared from sponge titanium, pure zirconium powder, pure aluminum, and aluminum-vanadium alloy. The design masses of each component are respectively 89.6 kg of sponge titanium and impurities, 6 kg of aluminum (Al), 4 kg of vanadium (V), and 4 kg of zirconium (Zr) 0.4 kg, after pressing the electrode, carry out secondary vacuum arc self-consumption smelting, the ingot is opened at 1050-1150°C, and processed into alloy plates at 850-950°C, the total variation is controlled between 75-95%. Above-mentioned processing technology can be carried out by the method of prior art.

Embodiment 2

[0016] The alloy material is prepared from sponge titanium, pure zirconium powder, pure aluminum, and aluminum-vanadium alloy. The design masses of each component are sponge titanium and impurities 89.9 kg, aluminum (Al) 5.5 kg, vanadium (V) 4.3 kg, zirconium (Zr) 0.3 kg, after pressing the electrode, carry out secondary vacuum arc self-consumption smelting, the ingot is opened at 1050-1150°C, processed into alloy plates at 850-950°C, and the total variation is controlled between 75-95%. Above-mentioned processing technology can be carried out by the method of prior art.

Embodiment 3

[0018] The alloy material is prepared from sponge titanium, pure zirconium powder, pure aluminum, and aluminum-vanadium alloy. The design masses of each component are respectively 88.2 kg of sponge titanium and impurities, 6.8 kg of aluminum (Al), 4 kg of vanadium (V), and 4 kg of zirconium (Zr) 1 kg, after pressing the electrode, carry out secondary vacuum arc self-consumption smelting, the ingot is opened at 1050-1150°C, processed into alloy plates at 850-950°C, and the total variation is controlled between 75-95%. Above-mentioned processing technology can be carried out by the method of prior art.

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PUM

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Abstract

The high strength and high toughness titanium alloy has Ti as main component, small amount of Al, V and Zr, and impurity not more than 1 wt%. Owing to Zr capable of forming continuous alpha type and beta type solid solution with Ti, the titanium alloy has excellent refined crystal grain structure, high plasticity and high toughness. The titanium alloy has tensile strength of 980-1180 MPa, elongation of 14-25 % and over 50 % higher than that of Ti-6Al-4V alloy, excellent mechanical performance, good machining performance and long service life. It may be applied in producing plate, rod, wire, pipe, etc used in different fields.

Description

technical field [0001] The invention relates to the technical field of titanium alloys, in particular to a titanium alloy with high strength and high toughness. Background technique [0002] Due to the advantages of low density, high specific strength, low elastic modulus, and good corrosion resistance, titanium metal is widely used in various industries such as aviation, marine, chemical, medical, decoration, and sporting goods. [0003] As an α+β two-phase medium-strength alloy, Ti-6Al-4V is widely used in all walks of life. However, in practical applications, due to the high strength of Ti-6Al-4V, in the annealed state Under certain circumstances, some industries require Ti-6Al-4V to work in a high-strength environment, and at the same time require Ti-6Al-4V to have good toughness. High strength and good toughness are inherently contradictory. It is difficult to stabilize toughness while ensuring high strength. This is evident in the actual production process and in indu...

Claims

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Application Information

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IPC IPC(8): C22C14/00
Inventor 张军韩光旭
Owner 辽宁峰阁钛业集团有限公司
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