Influence of Solution Heat Treatment Temperature and Time on the Microstructure and Mechanical Properties of Gas Induced Semi-Solid (GISS) 6061 Aluminum Alloy
The influence of solution heat treatment (SHT) temperature and time on the microstructure and mechanical properties of semi-solid 6061 aluminum alloy has been investigated in this study.Microstructure of the as-cast 6061 aluminum alloy mainly consisted of globular α-Al matrix and eutectic phase (α-A1 + Mg2Si) at the grain boundary (GB).Iron rich intermetallic phase was also observed at the grain boundary.Eutectic phase started to dissolve after solution heat treatment.The dissolution of eutectic phase increased with increasing solution treatment time,however,the amount of remaining eutectic phase was found to be slightly changed after solution treating longer than 1 h at 550 ℃ and 2 h at 530 ℃.Hardness and tensile results of specimens after artificial aging were utilized to compare and select the optimum solution heat treatment condition cooperating with the microstructural observation.The optimum solution heat treatment condition of the alloy in this study was at 530 ℃ for 2 h.
6061 aluminum alloy solution heat treatment Gas Induced Semi-Solid (GISS) process
Nitikarn Pajaroen Thawatchai Plookphol Jessada Wannasin Sirikul Wisutmethangoon
Department of Mining and Material Engineering,Faculty of Engineering,Prince of Songkla University,Ha Department of Mechanical Engineering,Faculty of Engineering,Prince of Songkla University,Hat Yai,Tha
国际会议
济南
英文
67-71
2012-12-29（万方平台首次上网日期，不代表论文的发表时间）