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Tensile tests and Erichsen tests were carried out at room temperature on Mg–Zn and Mg–Zn–X (X=Ca, Sr or Ba) alloys to investigate the effects of group II elements on cold stretch formability. First-principles calculations were also performed to understand the effects of group II elements on the basal and prismatic 〈a〉 slips. The flow stresses of the Mg–Zn–X alloys were lower than that of the Mg–Zn...
First-principles shear and tensile tests were performed on pure Mg, Mg–Zn–Ca, Mg–Ca and Mg–Zn models, and the generalized stacking fault energy for basal and prismatic slip systems and the surface energy of the {0001} plane were investigated to understand the origins of the high-stretch formability of Mg–Zn–Ca alloys. The calculations showed that the plastic anisotropy is reduced by the addition of...
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