Microstructural, mechanical and tribological properties of ultrafine-grained Cu–Cr–Zr alloy processed by high pressure torsion

The effect of temperature on tribological properties of coarse grained (CG) and ultrafine-grained (UFG) Cu–Cr–Zr alloy processed via high pressure torsion (HPT) was investigated. Dominant wear mechanism depends on both temperature and microstructure of the alloy. Adhesive, abrasive and oxidative wear mechanisms are operative in all samples at room temperature. Adhesive wear mechanism is also operative at 200 °C. Oxidative wear is found to be...