(a) Representative back scattered electron micrograph of MGC; (b) representative wear track after 20 min of sliding at 10 N load. The region where there was interphase delamination has been marked with the blue dotted line as a guide to the eye; (c) wear debris formed due to sliding wear at 10 N load (d) interphase delamination between the amorphous and crystalline phases at the periphery of the wear track. The dendrites appear brighter than the matrix due to partitioning of heavier elements into the crystalline phase. Wear track shows uniform deformation on surface. There was no preferred wearing of one phase over another. Wear debris did not show any indication of oxidation.