Effect of processing conditions on transient liquid phase sintering of premixed aluminium alloy powders

Abstract

Aluminium powder metallurgy is attracting attention of many researchers for making near net shape components by replacing conventional process of liquid metallurgy. In the present work, sintering response of a 2xxx series aluminium powder premix, containing 4.5Cu-1Si-0.8Mg (by wt %) blended without any lubricant in a mixer with a ball to powder ratio of 10:1 (by wt) has been studied. The higher mixing time of 6 hours and compacting pressure of 450 MPa gave 90% theoretical sintered density and hardness of 91 HRH with uniform distribution of alloying elements and optimal dimensional growth. © 2013 VBRI press.