Investigation of the Effect of Zirconium Amount on Grain Size and Wear Performance in TZM Alloys Produced by Mechanical Alloying Method

In this study, the relation between grain size, hardness and wear performance of Titanium-Zirconium-Molybdenum (TZM) alloys with different amounts (0.06, 0.07, 0.08 and 0.09 wt%) of Zr added by the mechanical alloying method was investigated. As a result of the studies, it was observed that the number of pores in the structure increased with the increase in the amount of Zr, while there was a decrease in the grain size. In the hardness and density results, it was observed that while the hardness values increased with increasing Zr amount, there was a decrease in the density values. As a result of the wear tests, the lowest weight loss at 10–30 N loads was obtained in the TZM alloy with the highest Zr added (0.09% Zr). The lowest friction coefficient in the friction coefficient results was obtained in TZM alloy with 0.09% Zr added.