基于共晶相量化的6082铝合金的最佳均匀化制度  

The optimal homogenization parameters of 6082 aluminum alloys based on eutectic phase quantification

作　　者：刘方镇 于承斌 李震 长海博文[1,2] 张波 LIU Fang-zhen;YU Cheng-bin;LI Zhen;HIROMI Nagaumi;ZHANG Bo(Shagang School of Iron and Steel,Soochow University,Suzhou 215137,China;Institute of High Performance Metal Structure Materials,Soochow University,Suzhou 215137,China;Shandong Weiqiao Aluminum Electricity Co.,Ltd.,Binzhou 256200,China)

机构地区：[1]苏州大学沙钢钢铁学院,江苏苏州215137 [2]苏州大学高性能金属结构材料研究院,江苏苏州215137 [3]山东魏桥铝电有限公司,山东滨州256200

出　　处：《轻合金加工技术》2019年第11期24-31,共8页Light Alloy Fabrication Technology

基　　金：国家自然科学基金(U1864209)

摘　　要：采用差示扫描量热仪、金相显微镜、扫描电子显微镜及能谱分析等方法,通过对6082铝合金的铸态和均匀化态的显微组织观察和共晶相的量化统计研究,确定了6082铝合金的最佳均匀化制度。结果表明:6082铝合金铸态组织中存在着大量的非平衡凝固的Mg2Si共晶相和β-Al(Mn,Fe)Si相共晶相。经过560℃10 h均匀化后,Mg2Si共晶相溶解入α(Al)基体中,β-Al(Mn,Fe)Si共晶相向α-Al(Mn,Fe)Si相转变。The optimal homogenization parameters of 6082 aluminum alloys were determined by the observation of microstructure and the quantitative statistical study of as-cast and homogenized samples of 6082 aluminum alloy by using differential scanning calorimeter(DSC),optical microscope,scanning electron microscope(SEM)and energy spectrum analysis.The results show that there are a lot of eutectic phases produced by non-equilibrium solidification in the as-cast microstructure of 6082 aluminum alloys.The eutectic phases are Mg2 Si phases andβ-Al(Mn,Fe)Si phases.After homogenization at 560℃for 10 h,Mg2 Si eutectic phases dissolve into the aluminum matrix,andβ-Al(Mn,Fe)Si eutectic phases transfer toα-Al(Mn,Fe)Si phases.

关 键 词：均匀化 MG2SI相 Al(Mn Fe)Si相 量化统计 硬度 电导率 

分 类 号：TG146.21[一般工业技术—材料科学与工程]