Wear characteristics of severely deformed aluminum sheets by accumulative roll bonding (ARB) process

►The wear rate of the ARBed Al was higher than that of the non-processed alloy. ►This unexpected behavior was related to the low strain hardening capability and evolution of the ARB subsurface microstructure during the wear process. ►Sliding wear of the ARBed Al proceeded by surface deformation, and progressed by delamination of the deformed surface layer. ►The wear rate of ARBed Al increased by increasing applied load and sliding speed.