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首页> 外文会议>International conference on machinery electronics and control engineering >Influence of Solution Heat Treatment Temperature and Time on the Microstructure and Mechanical Properties of Gas Induced Semi-Solid (GISS) 6061 Aluminum Alloy
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Influence of Solution Heat Treatment Temperature and Time on the Microstructure and Mechanical Properties of Gas Induced Semi-Solid (GISS) 6061 Aluminum Alloy

机译：固溶热处理温度和时间对气致半固态6061铝合金组织和力学性能的影响

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摘要

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 °C and 2 h at 530 °C.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 °C for 2 h.
机译：研究了固溶热处理温度和时间对半固态6061铝合金组织和力学性能的影响。6061铝合金铸态组织主要由球状α-Al基体和晶界（GB）处为共晶相（α-Al+ Mg2Si）;晶界处也观察到富铁金属间相;固溶热处理后，共晶相开始溶解;随着固溶处理时间的增加，共晶相的溶解度增加但是，在550°C固溶处理1 h和530°C固溶处理2 h以上后，发现共晶相的残留量略有变化。利用人工时效后的硬度和拉伸结果来比较和选择最佳的固溶热处理条件与显微组织观察相配合。本研究中合金的最佳固溶热处理条件是在530°C下进行2 h。

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