Modification of Mn on corrosion and mechanical behavior of biodegradable Mg(88)Y4Zn2Li5 alloy with long-period stacking ordered structure

查看全文 作　　者：Jiaxin [1,2]Zhang;Jinshan [1,2]Zhang;Fuyin [1,2]Han;Wei [1,2]Liu;Longlong [1,2]Zhang;Rui [1,2]Zhao;Chunxiang [1,2]Xu;Jing [1]Dou

机构地区：[1]College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan,030024,China;[2]Shanxi Key Laboratory of Advanced Magnesium-based Materials,Taiyuan,030024,China

出　　处：《Journal of Materials Science & Technology》索引2020年第42卷第7期,共13页

基　　金：This work was supported financially by the National Natural Science Foundation of China(Nos.51474153 and 51574175). 摘　　要：The biological corrosion behavior and mechanical properties of Mg(89-x)Y4 Zn2 Li5 Mnx(x=0,0.5,1,1.5 and2 at.%) alloy with long-period stacking ordered(LPSO) structure were investigated in this work.The magnesium matrix and the eutectic phase of Mg(88)Y4 Zn2 Li5 Mn1 alloy are effectively refined by the grain boundary segregation of Mn,and the average size of matrix and the eutectic phase decreased by 66%and 74%,respectively.The ultimate tensile strength(UTS) and elongation enhanced by 36% and 55%,respectively.The corrosion rates obtained by weight loss and hydrogen evolution of Mg(88)Y4 Zn2 Li5 Mn1 alloy were 79% and 84% lower than that of Mg(88)Y4 Zn2 Li5 alloy.Additionally,Mg(88)Y4 Zn2 Li5 Mn1 alloy also presents superior corrosion behavior in electrochemical test.It is verified that Mn plays a positive role in both corrosion and mechanical properties of the Mg(88)Y4 Zn2 Li5 Mn1 alloy,which provides a reference for further experimental work. 关键词：Magnesium alloy LPSO CORROSION Mechanical behavior EIS

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Modification of Mn on corrosion and mechanical behavior of biodegradable Mg(88)Y4Zn2Li5 alloy with long-period stacking ordered structure

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