Abstract The microstructure, mechanical properties and stretch formability of the Mg-2Zn-1Mn-0.5Ca-0.1Gd alloy (ZMX21) was investigated in present work. The research results show that the alloy exhibits a weakened ND-splitting texture. The Erichsen Index (IE) value of present alloy could reach to 7.59 mm which is higher than the reported references. Such phenomenon was thought originate from the high n value and low r value caused by the weakened split texture and the initiation of non-basal slip. The ZMX21 alloy developed in present work demonstrates a good balance of elongation and stretch formability at room temperature.

中文翻译：

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Mg-2Zn-1Mn-0.5Ca-0.1Gd 板材在室温下具有优异的延展性和拉伸成型性

摘要 本文研究了Mg-2Zn-1Mn-0.5Ca-0.1Gd合金（ZMX21）的显微组织、力学性能和拉伸成形性。研究结果表明，该合金表现出弱的 ND 分裂织构。本合金的埃里克森指数 (IE) 值可达 7.59 mm，高于报道的参考文献。这种现象被认为是由于裂隙结构减弱和非基底滑移开始导致的高n值和低r值所致。目前工作中开发的 ZMX21 合金在室温下表现出良好的伸长率和拉伸成形性平衡。