Investigation of structure and energy of edge dislocation in bcc iron

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	Investigation of structure and energy of edge dislocation in bcc iron
	L. Q. Chen; C. Y. Wang; T. Yu
	2006
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	55 期号:11 页码:5980-5986
摘要	Based on the theory of dislocations, we have constructed the four models of the < 100 > {010}, < 100 > {011}, 1/2 < 111 > {001} and 1/2 < 111 > {112} edge dislocations in bcc Fe using the molecular dynamics method, and the formation energy, core energy and core radius of the dislocations have been calculated respectively. The calculated results indicated that the formation energies of < 100 > {010} and < 100 > {011} edge dislocations are higher than those of 1/2 < 111 > {011} and 1/2 < 111 > {112} edge dislocations. This shows that the formation of 1/2 < 111 > edge dislocation is easier than that of (100) edge dislocation. However, the core radii of < 100 > {010} and < 100 > {011} edge dislocations are smaller than those of 1/2 < 111 > {011} and 1/2 < 111 > {112} edge dislocations. This shows that the atomic numbers locating at the singular region in the 1/2 < 111 > edge dislocation are greater than those in < 100 > edge dislocation. Therefore, the motion of 1/2 < 111 > edge dislocation is easier than that of < 100 > edge dislocation.
部门归属	cent iron & steel res inst, inst funct mat, beijing 100081, peoples r china. tsing hua univ, dept phys, beijing 100084, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;chen, lq (reprint author), cent iron & steel res inst, inst funct mat, beijing 100081, peoples r china;clqun123@sohu.com
关键词	Bcc Fe Edge Dislocation Molecular Dynamics Simulation Transition-metals Core Structure Alpha-iron
URL	查看原文
WOS记录号	WOS:000241880000067
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34146
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Q. Chen,C. Y. Wang,T. Yu. Investigation of structure and energy of edge dislocation in bcc iron[J]. Acta Physica Sinica,2006,55(11):5980-5986.
APA	L. Q. Chen,C. Y. Wang,&T. Yu.(2006).Investigation of structure and energy of edge dislocation in bcc iron.Acta Physica Sinica,55(11),5980-5986.
MLA	L. Q. Chen,et al."Investigation of structure and energy of edge dislocation in bcc iron".Acta Physica Sinica 55.11(2006):5980-5986.