What is tungsten molybdenum alloy?
Tungsten-molybdenum alloy is an alloy composed of molybdenum added with tungsten as the base, and the alloy contains 2.5%-50% of molybdenum.
Preparation process of tungsten molybdenum alloy
Alloy billet (prepared by powder metallurgy or melting method) → billet (extrusion or forging) → rolling, forging or rotary forging → drawing. After plastic deformation, tungsten-molybdenum alloy plates, tungsten-molybdenum alloy rods, tungsten-molybdenum alloy wires or profiles can be prepared.
The properties of tungsten molybdenum alloy
When the molybdenum content is greater than 2.5%, the high-temperature mechanical properties of the arc smelting and extruding tungsten-molybdenum alloy begin to change significantly. When the temperature is higher than 1650℃, the solid solution strengthening effect is significantly reduced, and W-15Mo alloy has the best high-temperature strength Until 2200℃, its strengthening is still higher than that of pure tungsten. The ductility-brittle transition temperature of W-15Mo alloy after forging and annealing is 175℃, which is 80~90℃ lower than pure tungsten.
Uses of tungsten molybdenum alloy
Tungsten and molybdenum are used together with an alloy containing 75% W and 25% Mo as a thermocouple for high temperature measurement. This kind of thermocouple can be used to measure the temperature around 1200~2000℃. Thermocouples of tungsten and alloys containing 75% W and 25% Mo can be used to measure high temperatures up to 3000°C. The main product of tungsten-molybdenum alloy is tungsten-molybdenum wire, which is used as a material for measuring high temperature thermocouples and cutting. Special-shaped parts are used as high temperature components of aerospace.
