Sliding wear behavior of in situ Al-4.5Cu-5TiB2 composite processed by single and multiple roll passes in mushy state

► Wear resistance of composite increases with number of mushy state roll passes. ► Hardness increases by particle redistribution and grain refinement by rolling. ► Wear rates of the composites decrease with hardness following linear relationship. ► Wear resistance of rolling surface is higher than that of long-transverse surface. ► Coefficient of friction is influenced by hardness and iron content of wear debris.