The influence of Al substitution and high-speed impact treatment in Al-Ti-V-Cr

Al-Ti-V-Cr is a single Body Centered Cubic (BCC) solid solution, which exhibited low wear coefficient and excellent wear resistance. Previous studies have investigated the differences in physical properties of high-entropy alloys as a function of Al content. However, there have been no studies on the effect of impact hardening on Al_xTiVCr. In this study, the relationship between the change in structure of the alloy by varying the amount of Al in Al_xTiVCr and its behavior after impact was investigated. The Vickers hardness of the samples increased after impact regardless of the Al content, with a 35% increase in Vickers hardness at 30 GPa for x = 4. This may be due to work hardening caused by structural defects induced in the sample by the impact.