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Currently the most widely used titanium zirconium molybdenum alloy (Mo-0.5% Ti-0.008% Zr) and TZC (Mo-1.25% Ti-0.15% Zr-0.15% carbon). It has good high temperature strength and high recrystallization temperature, but also good at room temperature ductility. Preparation of powder metallurgy and vacuum arc melting method. In a very bad condition to make a high-temperature structural materials and high-temperature processing of tools and materials. As used in the manufacture of aluminum and copper alloys heat, casting molds and cores of iron and iron alloys, such as stainless steel seamless pipe extrusion and hot working tool head. Also for parts of the universe and flying rockets device surface. Useful hafnium instead of titanium, duplex structure formed by the method of strengthening molybdenum alloy. 

Structural elements furnace for cast aluminum, bronzing mold inserts, rocket nozzles and electrodes. 

 

Molybdenum-based add a small amount of molybdenum alloy of titanium, zirconium and trace elements carbon, high temperature strength, is currently the most widely molybdenum alloy. The nominal composition of molybdenum and titanium-zirconium alloy is Mo-0.5Ti-0.08Zr, generic brands of titanium-zirconium-molybdenum alloy. 1956 U.S. Climax Molybdenum Company produced the first batch of industrial-scale titanium zirconium molybdenum alloy ingots. The late 1950s, with the casting method can produce large quantities of titanium-molybdenum alloy of zirconium alloy material. By the 1970s, the alloy to be the best universal molybdenum alloy. China in the mid-1960s began to study law with the production of cast titanium-zirconium alloy molybdenum alloys, 70s carried out a large-scale trial, with a casting method using powder metallurgy production of titanium and zirconium alloy molybdenum alloy product capabilities. 

 

To meet the requirements of higher temperatures and intensities, and the formation of carbon-molybdenum alloys based on titanium-zirconium-molybdenum alloy titanium-zirconium alloy based on the increase of titanium, zirconium, carbon, and its common component of Mo-1.25Ti-0.15Zr-0.15C , called TZC alloy. However, because deformation is difficult, so the 1990s, industrial scale has not yet formed, there is no product, but the product according to the requirements provided. 

Strengthening mechanisms were introduced to strengthen the mechanism of titanium-zirconium alloys and molybdenum alloys Tzc alloys. 

 

Zirconium alloy titanium-molybdenum alloy strengthening mechanism are: 

(1) cold deformation hardening alloys to improve both the strength and grain refinement, while producing resilient fibrous microstructure. 

(2) small amounts of titanium and zirconium element in the molybdenum substrate was dissolved, add structural stability, increase the recrystallization temperature. 

(3) each formed by a reaction of the molybdenum substrate displacement-type elements (titanium, zirconium) with interstitial elements (carbon) double spherical carbide particles precipitated due to dispersion strengthening and improving the high temperature strength and creep resistance of molybdenum. Titanium-molybdenum alloy of zirconium and titanium alloys have a carbon content of Mo-0.5Ti alloy with the same critical proportions. Powder Preparation. 

 

Use molybdenum and titanium-zirconium alloy used at temperatures above 1100 ℃. Because titanium-zirconium alloy molybdenum alloys have excellent creep resistance, and therefore is the best high temperature and high strength die thermal processing (such as casting, extrusion, isothermal forging and die with the piercing plug) material; simultaneously used as high temperature and pressure equipment (hot isostatic press and high temperature furnace) of structural materials, such as heat shields, struts, etc.; it is also an excellent material for high-power ceramic tube gate used; addition, you can also be used to make the production of powder metallurgy products, refractory materials and uranium dioxide grains used to burn the boat. Because of its good weldability and high recrystallization temperature, the alloy has been used on a trial and high temperature sealing hot gas valve of the gas system. Tzc than the titanium-zirconium alloy molybdenum alloy alloy has a higher temperature performance for titanium alloys, zirconium molybdenum alloys can not meet a requirement, is currently the most used powder metallurgy head into the legal system for stainless steel heat perforations. 

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