Effects of Zn on < c plus a > slip and grain boundary segregation of Mg alloys

HS Jang and BJ Lee, SCRIPTA MATERIALIA, 160, 39-43 (2019).

DOI: 10.1016/j.scriptamat.2018.09.022

Using atomistic simulations, we investigated the effects of Zn on Mg alloys to reveal the mechanism underlying the good ductility and strong basal texture of Mg-Zn solid solutions at room temperature. We found that Zn can activate < c + a > slip by reducing critical resolved shear stress anisotropy among slip systems that improves ductility and that Zn has a low grain boundary segregation tendency. Because twinning and recrystallization, which have decisive effects on the texture evolution, will not be affected significantly due to the low segregation of Zn, Mg- Zn alloys are expected to yield a texture similar to that of pure Mg. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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