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

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	Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in -titanium
	Wang, Hao; Bao, Qili L.; Zhou, Gang; Qiu, J. K.; Yang, Yi; Ma, Y. J.; Bai, Chunguang G.; Xu, Dongsheng S.; Rugg, David; Huang, Aijun J.; Hu, Qing-Miao; Lei, J. F.; Yang, Rui
	2019-05-14
Source Publication	JOURNAL OF MATERIALS RESEARCH
ISSN	0884-2914
Volume	34 Issue:9 Pages:1608-1621
Abstract	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.
Keyword	plastic deformation grain boundary recrystallization reorientation atomistic simulation
Indexed By	SCI
Language	英语
WOS ID	WOS:000471320700015
Publisher	CAMBRIDGE UNIV PRESS
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/81098
Collection	中国科学院金属研究所
Recommended Citation 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.

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