Preparation of TZM molybdenum alloy bar with high performance
Molybdenum metal is easy to oxidize at high temperature, recrystallization temperature is low, room temperature processing performance is poor, by adding titanium, zirconium, carbon and other elements in molybdenum can effectively improve the performance of molybdenum alloy, the development of TZM molybdenum alloy (titanium zirconium molybdenum alloy) has been widely used in aerospace, nuclear energy utilization, medical, machinery and other industries.
The main components of TZM molybdenum alloy are as follows: Carbon (C) : 0.01%-0.04%; Titanium (Ti) : 0.40%-0.55%; Zirconium (Zr) : 0.06%-0.12%; The margin is molybdenum (Mo). At present, TZM alloy is produced by powder metallurgy. The method of preparing low oxygen TZM molybdenum alloy bar is to use high carbon molybdenum powder and conventional titanium hydride and zirconium hydride as raw materials, and then sintered in vacuum medium frequency induction sintering furnace after mixing. The bar material is sintered, and the density and properties are not ideal. The invention relates to a manufacturing method of molybdenum alloy for nuclear fusion device. The method includes the steps of raw material preparation, mixing, cold isostatic pressing, vacuum sintering, forging, etc., to prepare molybdenum alloy material with uniform mechanical properties in three directions. The method is mainly used for preparing TZM block material. Molybdenum alloy and a manufacturing method thereof can produce TZM plate, bar and block raw material with uniform performance, high strength and high ductility through molybdenum alloy powder reduction and batch process, static pressing blank, and then sintering, forging and hot rolling. The invention relates to a preparation method of TZM molybdenum alloy bar with high performance. The molybdenum alloy material prepared by powder metallurgy process has fine grain, uniform, high density and excellent performance.
