赵元亮,边丽萍,赵兴国,曾航航,梁伟,孟棫朴.Mg-10Y-2.45Zn-1Ca-0.37Al合金的组织演变及力学行为[J].稀有金属材料与工程,2019,48(7):2165~2170.[Zhao Yuan-liang,Bian Li-ping,Zhao Xing-guo,Zeng Hang-hang,Liang Wei,Meng Yu-pu.Microstructure Evolution and Mechanical Behavior of Mg-10Y-2.45Zn-1Ca-0.37Al Alloy[J].Rare Metal Materials and Engineering,2019,48(7):2165~2170.]
Mg-10Y-2.45Zn-1Ca-0.37Al合金的组织演变及力学行为
投稿时间:2018-01-20  修订日期:2019-06-08
中文关键词:  Mg-Y-Zn-Ca-Al  长周期堆垛有序结构  微观组织  力学性能
基金项目:国家自然科学基金资助(51401143);山西省青年科技研究资助(2014021017-1).
中文摘要:
      本文通过磁悬浮熔炼铜模吸铸工艺制备了Mg-10Y-2.45Zn和Mg-10Y-2.45Zn-1Ca-0.37Al两种合金,考察复合添加高含量Ca及少量Al合金元素对铸态Mg-10Y-2.45Zn合金中LPSO相形成的影响及其在固溶热处理及高温高应力下的组织演变规律及力学行为变化。结果表明,铸态下高含量Ca及少量Al参与了18R LPSO的大量形成且出现大量18R LPSO相分层界面;在高温下,不同于Mg-10Y-2.45Zn合金,Mg-10Y-2.45Zn-1Ca-0.37Al中的18R LPSO大量溶解,并在晶界处合并长大、a-Mg晶粒粗化;在高温大塑性变形条件下,大块状18R LPSO扭折、分层或破碎,18R LPSO相界附近发生动态再结晶和α-Mg基体内析出大量细小棒状14H LPSO相强化了合金。
Microstructure Evolution and Mechanical Behavior of Mg-10Y-2.45Zn-1Ca-0.37Al Alloy
英文关键词:Mg-Y-Zn-Ca-Al alloy  Long-period Stacking Ordered Structure  Microstructure  Mechanical Properties
英文摘要:
      Mg-10Y-2.45Znand Mg-10Y-2.45Zn-1Ca-0.37Al alloys were fabricated by magnetic levitation induction smelting coupled with copper-mould suction casting technique. The compound effect of high content Ca and small amount of Al alloying element addition on the formation of LPSO phase in as-cast Mg-10Y-2.45Zn alloy and the microstructure evolution and mechanical behavior under high temperature and high stress were investigated. The results showed that high content of Ca and a small amount of Al were involved in the formation of massive 18R LPSO and a large number of 18R LPSO phase delamination interface emerged under the as-cast condition. At high temperature, unlike the Mg-10Y-2.45Zn alloy, a large number of 18R LPSO phases dissolved and grew at the grain boundaries of Mg-10Y-2.45Zn-1Ca-0.37Al, the size of α-Mg grains coarsen. At high temperature and high plastic deformation, massive 18R LPSO kinked, delamination or crushed, dynamic recrystallization occured at the vicinity of the 18R LPSO phase boundary and a large number of fine rod-like 14H LPSO phases precipitatied in α-Mg matrix conspire to strengthen the alloy.
作者单位E-mail
赵元亮 太原理工大学 2226515534@qq.com 
边丽萍 太原理工大学 bianliping_724@126.com 
赵兴国 太原理工大学  
曾航航 太原理工大学  
梁伟 太原理工大学  
孟棫朴 山西省技术市场管理办 山西 太原  
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