1981 Volume 22 Issue 8 Pages 521-526
In the engineering applications where the aluminium and/or aluminium alloy are in sliding contact a tendency of galling or seizing at the interface play an important role. In order to reduce this adverse effect and to develop an aluminium based bearing material, graphite particles were dispersed in 7079 Al-alloy having high strength and toughness.
The variables-speed of stirring, temperature of the melt and preheating temperature of graphite are optimized to facilitate incorporation of graphite in the melt and its subsequent solidification resulting in the desired composite. An improvement in the wear property in contact with mild steel was observed in comparison to that of the matrix alloy.