What Is the Preparation Method of TZM Molybdenum Alloy?

The preparation method of TZM alloy mainly includes vacuum arc melting and powder metallurgy. The vacuum melting method is to add a certain amount of Ti, Zr, etc. to pure molybdenum according to the mass fraction, and then use arc melting to obtain molybdenum-titanium-zirconium alloy. Because the method has the disadvantages of long process, complex process, large equipment occupation, large consumption, low yield and high cost, so its use is limited.

The powder metallurgy method is to use high-purity molybdenum powder, TiH2 powder, ZrH2 powder and spray carbon black powder to mix uniformly in proportion, and then form it by cold isostatic pressing, and then sinter at high temperature (1900-2100 ° C) under a protective atmosphere to obtain TZM blanks; The billet is hot-rolled at 1253-1350°C (high-temperature forging), hot-rolled at 600-750°C (medium-temperature forging), cold-rolled at 200-300°C (cold forging), and finally subjected to stress relief annealing to obtain the finished TZM material. The method has the advantages of low equipment investment, relatively simple process, short production cycle, low consumption, high production capacity and high yield.