Effect of Temperature and Sliding Velocity on the Dry Sliding Wear Mechanisms of Boron Modified Ti-6Al-4V Alloys

The dry sliding wear behavior of as-cast pristine and boron-modified Ti-6Al-4V (Ti64) alloys (having 0.3 0.55 wt% B) is investigated using pin-on-disc experiments with the pin being Ti64 alloy EN31 steel disc. Experiments are performed at speeds (s) 1, 2, 4 m/s temperatures 300 573 K. A mixed response in observed. At lowest speed, all three (except 0.55B K) exhibit similar rates, abrasive dominant mechanism. 2 m/s, temperature s increase, adhesive takes over along delamination wear. Here, sample shows highest rate due to debonding more TiB particles, which increases body abrasion With further increase oxidation observed for samples. XRD evaluation traces TiO2 Fe2O3, imply formation MML samples tested = also validated through subsurface microstructure analysis. It found that having particles has stability, because 0.3B show higher rate.