Abstract:The wear characteristics of the PM Al-10Ti alloy during dry sliding have been investigated. The wear process can be divided into the running-in stage with high wear rate and the steady-state stage exhibiting mild wear. The transfer layers develop due to deformation, compaction, fracture and adhesion. The oxides consisting of Al₂O₃and Fe₂O₃are formed on the worn surface and they reduce wear. Transition from running-in to steady-state wear is caused by strain hardening of subsurface and oxidation of the surface. At the steady-state wear stage, detachment of wear particles is mainly ascribed to delamination of transfer layers.

Key words: Al-Ti alloy　dry sliding wear　delamination