The effectiveness of Ca or Gd addition on ductility and formability of Mg–Zn–Zr based dilute alloys in deep drawing has not been systematically compared previously. In this study, formable Mg–Zn–Gd–Zr and Mg–Zn–Ca–Zr sheet alloys are produced by hot rolling. These sheets have similarly weakened basal texture, but the sheet of the Mg–Zn–Gd–Zr alloys has higher ductility and formability than that of Mg–Zn–Ca–Zr alloys. The combined addition of 0.2wt％ Ca and 0.4wt％ Gd to the Mg–1Zn–0.5Zr (wt％) alloy leads to a Mg–1Zn–0.4Gd–0.2Ca–0.5Zr alloy that has even better ductility, and its formability during deep drawing is comparable to the benchmark Al6016 sheet. An in-crease in Ca content from 0.2wt％ to 0.5wt％ leads to decreased sheet ductility and formability, predominantly due to grain boundary embrittle-ment.

Zhuoran Zeng;Mingzhe Bian;Shiwei Xu;Weineng Tang;Chris Davies;Nick Birbilis;Jianfeng Nie

College of Engineering and Computer Science,Australian National University,ACT.2601,Australia;Department of Materials Science and Engineering,Monash University,VIC 3800,Australia;State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,China;Research Institute(R&D Center),Baosteel Group Corporation,Shanghai 201999,China;Department of Mechanical and Aerospace Engineering,Monash University,VIC 3800,Australia

矿物冶金与材料学报

[1]Zhuoran Zeng;Mingzhe Bian;Shiwei Xu;Weineng Tang;Chris Davies;Nick Birbilis;Jianfeng Nie-.Optimisation of alloy composition for highly-formable magnesium sheet)[J].矿物冶金与材料学报,2022(07):1388-1395

Optimisation,formable,4Gd,Al6016,embrittle

composition,highly,magnesium,effectiveness,addition,ductility,formability,Mg,dilute,alloys,deep,drawing,has,not,been,systematically,compared,previously,In,this,study,produced,by,hot,rolling,These,sheets,have,similarly,weakened,basal,texture,but,higher,than,that,combined,2wt,4wt,1Zn,5Zr,leads,2Ca,even,better,its,during,comparable,benchmark,An,content,from,5wt,decreased,predominantly,due,grain,boundary,ment

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