Abstract

Sintering behavior of 2xxx series Al alloy was investigated to obtain full densification and sound microstructure. The commercial 2xxx series Al alloy powder. AMB2712, was used as a starting powder. The mixing powder was characterized by using particle size analyzer, SEM and XRD. The optimum compacting pressure was 200 MPa, which was the starting point of the "homogeneous deformation" stage. The powder compacts were sintered at 550~630°C after burn-off process at 400°C. Swelling phenomenon caused by transient liquid phase sintering was observed below 590°C of sintering temperature. At 610°C, sintering density was increased by effect of remained liquid phase. Further densification was not observed above 610°C. Therefore, it was determined that the optimum sintering temperature of AMB2712 powder was 610°C.C.

• Keywords: 2xxx series Al alloy;Transient liquid phase sintering;Densification;