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题名: Ab initio investigation on the slip preference of < a >-dislocations in hexagonal metals and alloys
作者: Zhou, G.;  Li, Y. J.;  Wang, H.;  Ye, L. H.;  Xu, D. S.;  Meng, C. G.;  Yang, R.
发表日期: 2017-11-1
摘要: Slip preference is investigated via ab initio calculations in hexagonal metals, Be, Mg, Ti, Zn and Zr, as well as alloyed Mg and Ti. In general, the unstable stacking fault energy, gamma(us), which is relevant with the Peierls barrier, plays the key role in determining slip preference. In the materials studied, slip is preferred on the plane that possesses a lower gamma(us). Detailed studies indicate that gamma(us), determined by the directionality of electron bonding, is primarily relevant to the c/a ratio. In alloyed Mg and Ti, alloying varies the c/a ratio, but due to different dependences of gamma(us) on c/a, certain alloying elements significantly affect < a >-slip preference in Mg, while alloying exhibits negligible influence on < a >-slip preference in hexagonal Ti. (C) 2017 Elsevier B.V. All rights reserved.
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Recommended Citation:
Zhou, G.,Li, Y. J.,Wang, H.,et al. Ab Initio Investigation On The Slip Preference Of < A >-dislocations In Hexagonal Metals And Alloys[J]. Elsevier Science Bv,2017,139:209-215.

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