Al–Pb–Si–In bearing alloy

Abstract

A bearing alloy consisting of Al–18·6Pb–8·8Si–1·4In has been produced by isostatically compacting mixed atomised alloy powders of Al–11Si and Pb–7In (all wt-%), followed by cold extrusion and rolling, with intermediate annealing treatments. The alloy was subjected to hardness tests and tensile tests and its tribological properties were evaluated using a miniature pin-on-disc machine. The properties of the alloy were found to compare favourably with those of other aluminium based bearing alloys. The alloy was roll bonded to a steel backer to which an intermediate layer of aluminium had been roll bonded. It is suggested that the alloy warrants further evaluation with a view to its possible commercial development.

MST/592