Affiliation:
1. School of Materials Science and Engineering , East China Jiaotong University, Nangchang , P.R. China
Abstract
Abstract
Semi-solid billets of A356 alloy were fabricated using a sloping-plate device. This study investigated the effects of reheating on the microstructural evolution of the alloy. Prolonged holding times and higher reheating temperatures caused the primary α-aluminum particles to gradually grow and spheroidize, resulting in increased liquid fraction. The optimal reheating condition was 580°C for 25 min, during which the average grain size increased to 89.3 μm and the shape factor reached 1.18. The secondary phases were also refined by the reheating process.
Subject
Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics