Influence of different solution methods on microstructure, precipitation behavior and mechanical properties of Al-Mg-Si alloy  

不同固溶方式对Al-Mg-Si合金组织性能及析出行为的影响（英文）

作　　者：Guan-jun GAO Chen HE Yong LI Jia-dong LI Zhao-dong WANG R. D. K. MISRA 高冠军;贺晨;李勇;李家栋;王昭东;R.D.K.MISRA(东北大学轧制技术及连轧自动化国家重点实验室,沈阳110819;Laboratory for Excellence in Advanced Steel Research, Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso)

机构地区：[1]State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China [2]Laboratory for Excellence in Advanced Steel Research, Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, TX 79968, USA

出　　处：《Transactions of Nonferrous Metals Society of China》2018年第5期839-847,共9页中国有色金属学报（英文版）

基　　金：Project(2016YFB0300605)supported by the National Key Research and Development Program of China;Project(51234002)supported by the National Natural Science Foundation of China;Project(L2013113)supported by the Liaoning Province Science and Technology,China;Project(N140703002)supported by the Fundamental Research Funds for the Central Universities,China

摘　　要：The effects of different solution methods on microstructure, mechanical properties and precipitation behavior of Al-Mg-Si alloy were investigated by scanning electron microscope, transmission electron microscope, tensile test, and differential scanning calorimetry. The results revealed that the recrystallized grains of the alloy after the solution treatment with hot air became smaller and more uniform, compared with solution treatment with electrical resistance. The texture of the alloy after two solution treatment methods was different. More rotated cube components were formed through solution treatment with electrical resistance, which was better for improving the drawability of the alloy. The strength of the alloy under the solution treatment with hot air was higher before stamping, because of the small uniform grains and many clusters in the matrix. The alloy solution treated with hot air also possessed good bake hardenability, because the transformation occurred on more clusters in the matrix.采用扫描电镜、透射电镜、拉伸试验及差示扫描量热技术研究不同固溶方式对Al-Mg-Si合金组织性能和析出行为的影响。结果表明:热风固溶比电阻固溶的合金再结晶晶粒更加均匀细小。经两种方式固溶后,合金织构不同,电阻固溶产生更多旋转立方织构,有利于提高合金的成形性。冲压前,均匀细小晶粒和基体中大量团簇存在使热风固溶合金强度较高。烤漆时,更多团簇发生转变,同时具有较好的烤硬化性。

关 键 词：Al-Mg-Si alloy solution method recrystallization grain TEXTURE mechanical property precipitation activation energy 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG166.3[金属学及工艺—金属材料]