650-DEG C-high-temperature-resistant titanium alloy

A technology of high-temperature titanium alloy and mass percentage content, which is applied in the field of titanium alloy, can solve the problems that have not been applied, and the high-temperature creep resistance and high-temperature oxidation resistance of titanium alloy are reduced, so as to improve mechanical properties, refine grains, The effect of good high temperature strength
CN110484774AActive Publication Date: 2019-11-22NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Publication Date
2019-11-22
Patent Text Reader

Abstract

The invention discloses 650-DEG C-high-temperature-resistant titanium alloy. The 650-DEG C-high-temperature-resistant titanium alloy comprises, by mass percentage, 5.5%-6.5% of Al, 5.5%-9.0% of the combination of Zr and Sn, smaller than or equal to 0.8% of each of two or more elements of Mo, Nb and Ta, 2%-3% of W, 0.3%-0.4% of Si, 0.05%-0.1% of Y, 0.1%-0.15% of the combination of C and O and the balance Ti and inevitable impurities. The ratio of the mass percentage of Sn to the mass percentage of Zr is 0.5-1, the mass percentage of C is larger than or equal to 0.03%, and the mass percentage ofO is smaller than or equal to 0.09%. According to the 650-DEG C-high-temperature-resistant titanium alloy, the multi-element reinforcement mode is adopted, the high-content Al is added as the Zr alloy element, the Sn alloy element, beta stable elements such as Nb, Mo and Ta, W and Y are added, and therefore the titanium alloy has the high temperature strength and plastic matching performance, andthe comprehensive mechanical properties of the titanium alloy are improved.
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Description

technical field

[0001] The invention belongs to the technical field of titanium alloys, in particular to a titanium alloy resistant to 650°C high temperature. Background technique

[0002] High-temperature titanium alloy has the characteristics of low density, high specific strength, high temperature resistance, excellent creep resistance and fatigue resistance, and is mainly used to manufacture discs, blades, intake casings and aircraft structural parts in compressors. At present, the use temperature of traditional high-temperature titanium alloys with solid solution strengthening as the main strengthening method can reach up to 600 ° C. The representative ones are IMI834 in the United Kingdom, Ti-1100 in the United States, BT36, BT18y in Russia, and Ti60, Ti600 and TG6 in China. , the alloy system is Ti-Al-Sn-Zr-Mo-Si-C system.

[0003] With the increase of the flight speed of new aerospace vehicles, the temperature of the aircraft shell and its engine components caused b...

Claims

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