Squeeze cast magnesium based composite materials are of interest to the automotive industry due to their potential in reducing vehicle mass,but their tribological performance,should be explored for power-train applications,including their scuffing behaviour.Dry sliding wear tests were performed on a AM60 matrix composite reinforced with Al2O3 fibres,AM60-9%(Al2O3)f,against steel rings at speeds between 0.1 to 1.5 m/s and at loads between 0.1 to 250.0 N.Composition and morphology of the wear debris as well as deformation microstructures below wear tracks were examined to determine tribological behavior in the mild,severe wear and the transient regimes.