Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in -titanium

doi:10.1557/jmr.2019.125

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	Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in -titanium
	Wang, Hao 2,3; Bao, Qili L.2,3; Zhou, Gang 2,3; Qiu, J. K.2,3; Yang, Yi 4; Ma, Y. J.2,3; Bai, Chunguang G.2,3; Xu, Dongsheng S.2,3; Rugg, David 1; Huang, Aijun J.4
刊名	JOURNAL OF MATERIALS RESEARCH
	2019-05-14
卷号	34 期号:9 页码:1608-1621
关键词	plastic deformation grain boundary recrystallization reorientation atomistic simulation
ISSN号	0884-2914
DOI	10.1557/jmr.2019.125
通讯作者	Wang, Hao(haowang@imr.ac.cn)
英文摘要	Employing atomic-scale simulations, the response of a high-angle grain boundary (GB), the soft/hard GB, against external loading was systematically investigated. Under tensile loading close to the hard orientation, strain-induced dynamic recrystallization was observed to initiate through direct soft-to-hard grain reorientation, which was triggered by stress mismatch, inhibited by surface tension from the soft-hard GB, and proceeded by interface ledges. Such grain reorientation corresponds with expansion and contraction of the hard grain along and perpendicular to the loading direction, respectively, accompanied by local atomic shuffling, providing relatively large normal strain of 8.3% with activation energy of 0.04 eV per atom. Tensile strain and residual dislocations on the hard/soft GB facilitate the initiation of dynamic recrystallization by lowering the energy barrier and the critical stress for grain reorientation, respectively.
资助项目	National Key Research and Development Program of China[2016YFB0701304] ; Natural Science Foundation of China[51671195] ; Chinese Academy of Sciences[QYZDJ-SSW-JSC031-01] ; Chinese Academy of Sciences[XXH13506-304] ; Youth Innovation Promotion Association, CAS[2015151]
WOS研究方向	Materials Science
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000471320700015
资助机构	National Key Research and Development Program of China ; Natural Science Foundation of China ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/133895]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Hao
作者单位	1.Rolls Royce PLC, Derby DE24 8BJ, England 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 4.Univ Shanghai Sci & Technol, Shanghai 200093, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hao,Bao, Qili L.,Zhou, Gang,et al. Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in -titanium[J]. JOURNAL OF MATERIALS RESEARCH,2019,34(9):1608-1621.
APA	Wang, Hao.,Bao, Qili L..,Zhou, Gang.,Qiu, J. K..,Yang, Yi.,...&Yang, Rui.(2019).Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in -titanium.JOURNAL OF MATERIALS RESEARCH,34(9),1608-1621.
MLA	Wang, Hao,et al."Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in -titanium".JOURNAL OF MATERIALS RESEARCH 34.9(2019):1608-1621.