Microstructure evolution and tensile mechanical properties of thixoformed AZ61 magnesium alloy prepared by squeeze casting
挤压铸造制备半固态AZ61镁合金的组织演变及力学性能(英文)作者机构：中国科学院重庆绿色智能技术研究院重庆401122
出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)
年 卷 期：2014年第24卷第11期
页 面：3421-3428页
核心收录：
学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
基 金：Project(51405466)supported by the National Natural Science Foundation of China Project(Y32Z010F10)supported by the Western Light Program of the Chinese Academy of Sciences Project(cstc2014jcyj A50009)supported by Chongqing Research of Application Foundation and Advanced Technology,China Project(cstc2014jcyj A50037)supported by Chongqing Research of Application Foundation and Advanced Technology,China
主 题：AZ61 magnesium alloy squeeze casting partial remelting mechanical properties
摘 要：A novel process that combines squeeze casting with partial remelting to obtain AZ61 magnesium alloy with semi-solid microstructures was proposed. In this route, the squeeze casting was used to predeform the magnesium alloy billets to obtain small dendritic structures. During subsequent partial remelting, small dendritic structures transform into globular grains surrounded by liquid films. The results show that the squeeze casting AZ61 alloy after partial remelting produces more ideal, finer semi-solid microstructure compared with as-cast AZ61 alloy treated by the same isothermal holding conditions. Moreover, the mechanical properties of the thixoformed AZ61 alloy prepared by squeeze casting plus partial remelting are better than those of the thixoformed alloy prepared by conventional casting plus partial remelting.
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