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A quaternary alloy, al-mo-w-ti technology, applied in the raw material field of titanium alloy production, can solve the problems of parts failure, inclusion, etc., and achieve the effect of high yield, uniform composition and stable quality
Active Publication Date: 2010-01-27
宝武特冶钛金科技有限公司
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[0011] The purpose of the present invention is to develop an Al-Mo-W-Ti quaternary alloy, which can solve the inclusion and component segregation of W and Mo in the high melting point alloy of TC25, and effectively avoid the failure of parts caused by metal inclusions in the TC25 titanium alloy.
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[0028] Embodiment of the present invention: firstly, metal Al and MoO powder, metal Al and WO powder are replaced by conventional thermite method to produce Mo powder and W powder, avoiding the addition of large particles of pure Mo and W; then AlO, Mo powder, W powder and sponge Ti are mixed according to a certain ratio (chemical composition weight percentage is as follows: W 12-14%, Mo 24-28%, Al 48-58%, Ti 6-10%), and melted in a vacuum induction furnace, cast After the alloy block is formed, a crusher is used to break the alloy block into small particles of ≤10mm. Finally, according to the conventional titanium alloy production process, the Al-Mo-W-Ti quaternary alloy produced by the present invention (see Table 2) is evenly mixed with sponge titanium and other alloy raw materials, and pressed together to form an electrode (φ560×150mm). Three times of vacuum self-consumption smelting to become a qualified finished ingot (φ860×2100mm).
[0029] The chemical composition det...
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Abstract
The invention discloses an Al-Mo-W-Ti quaternary alloy, which comprises the following components in percentage by mass: 10 to 15 percent of W, 20 to 30 percent of Mo, 45 to 60 percent of Al, 5 to 15 percent of Ti, and the balance of inevitable impurities. The Al-Mo-W-Ti quaternary alloy can solve segregation of impurities and components of W and Mo high-melting-point alloy in TC25, and effectively avoid the problem of part failure caused by metal impurities in TC25 titanium alloy.
Description
technical field [0001] The invention relates to a raw material for titanium alloy production, in particular to an Al-Mo-W-Ti quaternary alloy specially used for producing the alloy raw material of TC25 titanium alloy. Background technique [0002] Titanium alloy is a new type of metal material, containing more than 85% to 90% titanium, and the rest are alloy elements such as aluminum Al, molybdenum Mo, vanadium V, silicon Si, zirconium Zr, iron Fe, tin Sn, etc. It has light specific gravity ( About 4.5g / cm 2 , steel is 7.8g / cm 2 ), corrosion resistance, high service temperature (currently the highest can reach more than 700 ℃), high strength, good plasticity and many other advantages, it is widely used in aviation, aerospace, ocean, construction, automobile, golf head and other important parts, high-end civilian products . [0003] The basic production process of titanium alloy is as follows: (1) Titanium electrode preparation: Alloy raw materials (aluminum Al, molybdenum...
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