Competition between slip and twinning in face-centered cubic metals

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	Competition between slip and twinning in face-centered cubic metals
	T. Cai; Z. J. Zhang; P. Zhang; J. B. Yang; Z. F. Zhang
	2014
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	116 期号:16
摘要	A criterion is proposed to predict the transition from slip to twinning in the face-centered cubic (FCC) metals within the framework of the generalized stacking fault energy (GSFE) curves, which are calculated by using the full potential linearly augmented plane wave method incorporating local orbital based on density functional theory. The criterion is a function of the stacking fault energy, unstable stacking fault energy, and unstable twinning fault energy, which are obtained from the GSFE curves. Based on the competition between slip and twinning, a new parameter is proposed to rank the sequence of the twinnability for ten typical FCC metals. The ranking results are in good agreement with the experimental data available. Compared with the previous studies of heterogeneous nucleation of twin, it is found that the heterogeneous nucleation sites of twinning such as crack tip and grain boundary do not change the ranking sequence. It is suggested that the GSFE curve may be regarded as the dominant factor determining the twinnability of FCC metals. (C) 2014 AIP Publishing LLC.
部门归属	[cai, t. ; zhang, z. j. ; zhang, p. ; yang, j. b. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; zhfzhang@imr.ac.cn
关键词	Transmission Electron-microscopy Fault Energy Fcc Metals Deformation Alloys Dislocations Crystals Strength Aluminum Gold
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73190
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. Cai,Z. J. Zhang,P. Zhang,et al. Competition between slip and twinning in face-centered cubic metals[J]. Journal of Applied Physics,2014,116(16).
APA	T. Cai,Z. J. Zhang,P. Zhang,J. B. Yang,&Z. F. Zhang.(2014).Competition between slip and twinning in face-centered cubic metals.Journal of Applied Physics,116(16).
MLA	T. Cai,et al."Competition between slip and twinning in face-centered cubic metals".Journal of Applied Physics 116.16(2014).