Preparation of TZM
TZM Alloy (Titanium-Zirconium-Molybdenum Alloy) is a common superalloy in molybdenum base alloys and an important commercial superalloy. TZM alloy has good high-temperature performance, so it is widely used in medical instruments, aerospace, electronics industry and glass and ceramic manufacturing industry.
Many studies have shown that the plastic brittle transition temperature, recrystallization temperature and toughness of TZM alloy are related to oxygen content. Oxygen in TZM alloy is easy to combine with strengthening elements titanium and zirconium, titanium and zirconium oxide particles are large, difficult to disperse evenly, poor strengthening effect, and easy to form crack sources. When the oxygen content in TZM alloy is high, the plastic-brittle transition temperature of the alloy will increase, and the recrystallization temperature will decrease, which directly leads to the decrease of alloy toughness, poor machinability, and seriously affects the alloy performance. The higher the oxygen content in TZM alloy, the worse the alloy performance, and conversely, the better the alloy performance. Therefore, oxygen is an impurity element to be strictly controlled.
The smelting method is to obtain TZM alloy by melting pure molybdenum and a certain amount of titanium, zirconium and carbon under vacuum. The oxygen content in TZM alloy can be reduced to 30ppm or even 20ppm by melting.
Powder metallurgy is a method to obtain TZM alloy by using molybdenum powder and titanium, zirconium powder or titanium hydride, zirconium hydride powder and carbon black powder evenly mixed in a certain proportion after static pressing forming, sintering, rolling (forging), annealing. TZM alloy produced by powder metallurgy has fine grain, simple process and equipment, short production cycle and high yield.
Our company can produce TZM plate, TZM rod, TZM foil, TZM wire, TZM processing workpiece according to customer demand.
