Ti alloy with high performance

A titanium alloy, high-performance technology for materials science

Inactive Publication Date: 2010-02-03
BEIJING AVIATION MATERIAL INST NO 1 GRP CORP CHINA AVIATION IND +1
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Problems solved by technology

[0007] Domestic status: China currently has a lot of aircraft, but compared with the advanced aircraft of the United St

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Embodiment Construction

[0026] The following alloy chemical composition is a specific example of the chemical composition and mass percentage to realize the high performance titanium alloy of the present invention.

[0027] Al: 5% to 6%; Mo: 3% to 4%; V: 1.5% to 2.5%; Sn: 2% to 3%; Zr: 2% to 3%; Cr: 1% to 1.5%; Nb: 1% to 1.5%; Si: 0.1% to 0.15%; Ti is the balance.

[0028] The above-mentioned high-performance titanium alloys are obtained through the following smelting process:

[0029] The high-performance titanium alloy of the present invention is obtained by adopting vacuum smelting technology, and is smelted three times in a vacuum consumable electric arc furnace, so that the alloy elements are evenly distributed. Consumable electrodes are not allowed to be welded by argon tungsten arc welding.

[0030] Prepare the master alloys such as Al~Mo and Al~V required for smelting first, use first-grade sponge titanium with a thickness of 0.83mm~12.7mm as the raw material, dry the raw materials and mast...

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Abstract

The invention relates to a Ti alloy new material with high performance. The alloy has the chemical components by weight percent: 3-7 percent of Al, 1-6 percent of Mo, 0.5-6 percent of V, 1-4 percent of Sn, 1-4 percent of Zr, 0.5-3 percent of Cr, 0.5-3 percent of Nb, 0.01-0.3 percent of Si, and the balance of Ti. The high performance Ti alloy has favorable comprehensive performance, is in the leadin the worldwide and has the breakthrough points that the strength and the plasticity are kept at the highest level, the fracture toughness of the Ti alloy are greatly enhanced, the use performance ofTi alloy parts is improved, and the comprehensive performance of planes of the country is further improved.

Description

technical field [0001] The invention is a high-performance titanium alloy, which belongs to the technical field of material science. Background technique [0002] Titanium and its alloys are an important metal material that emerged in the 1950s. Compared with steel, aluminum and other metal materials, it has three obvious advantages: high specific strength, good medium temperature performance and good corrosion resistance. In just 50 years, titanium and titanium alloys have developed rapidly and become an important part of the material field. Titanium and its alloys are mainly used in the aviation field, and are also more and more widely used in the chemical industry, nuclear industry, aerospace, ships and other fields. Therefore, titanium alloy technology is listed as the key technology of national defense technology and the basic technology for key development. In aviation, titanium alloy is one of the main structural materials of aircraft body structure and aircraft eng...

Claims

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Application Information

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IPC IPC(8): C22C14/00
Inventor 吴崇周魏寿庸何书林
Owner BEIJING AVIATION MATERIAL INST NO 1 GRP CORP CHINA AVIATION IND
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