The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading

doi:10.1016/j.actamat.2020.01.064

IMR OpenIR

	The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading
	Zhang, Fan 1; Ren, Yu 2,3; Yang, Zhiqing 4; Su, Huhu 4; Lu, Zhen 5; Tan, Chengwen 3; Peng, Hailong 6; Watanabe, Kentaro 1; Li, Bin 7; Barnett, Matthew R.8; Chen, Mingwei 1,9
通讯作者	Tan, Chengwen(tanchengwen@126.com) ; Chen, Mingwei(mwchen@jhu.edu)
	2020-04-15
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	188 页码:203-214
摘要	We report atomic-scale observations on the interaction of {10 (1) over bar2} deformation twins with 14H long-period stacking ordered (LPSO) phase in a magnesium alloy. It was found that the interaction strongly depends on the thicknesses of LPSO plates as well as the thickness ratios between LPSO plates and twins. We observed three size-dependent structure responses of LPSO to incoming twins: (1) pure shearing of thin LPSO plates in line with the incursive {10 (1) over bar2} twins; (2) twin-to-dislocation 'switch' from the alpha-Mg matrix to LPSO when LPSO/twin thickness ratios are below a critical value of 0.17 +/- 0.01; and (3) elastic deformation of LPSO to accommodate the propagation of incoming twin when LPSO/twin thickness ratios are larger than 0.17 +/- 0.01. Moreover, the inter-plate spacing of LPSO also influences the propagation modes of twins by controlling nucleation sites of new twins. These size-dependent interactions are accomplished by local structural transition of face-centered cubic units of LPSO during thin plate shearing and formation of gliding dislocations during LPSO deformation and twin blocked. The atomic-scale observations provide fundamental insights into these interaction modes and, hence, the precipitation strengthening mechanisms in Mg alloys under both quasi-static and dynamic loadings. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	Magnesium alloy Deformation twin Long-period stacking ordered phase Shock loading Transmission electron microscopy
资助者	World Premier International Research Center (WPI) Initiative by MEXT, Japan ; JSPS postdoctoral program ; Whiting School of Engineering, Johns Hopkins University ; US National Science Foundation
DOI	10.1016/j.actamat.2020.01.064
收录类别	SCI
语种	英语
资助项目	World Premier International Research Center (WPI) Initiative by MEXT, Japan ; JSPS postdoctoral program ; Whiting School of Engineering, Johns Hopkins University ; US National Science Foundation[CMMI-1635088]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000527826500019
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：35[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/321006/138573
专题	中国科学院金属研究所
通讯作者	Tan, Chengwen; Chen, Mingwei
作者单位	1.Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan 2.North China Elect Power Univ, Inst Adv Mat, Beijing 102206, Peoples R China 3.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 5.AIST, Math Adv Mat Open Innovat Lab, Sendai, Miyagi 9808577, Japan 6.Cent South Univ, Shcool Mat Sci & Engn, Changsha 410083, Peoples R China 7.Univ Nevada, Dept Chem & Mat Engn, Reno, NV 89557 USA 8.Deakin Univ, Inst Frontier Mat, Pigdons Rd, Geelong, Vic 3216, Australia 9.Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA
推荐引用方式 GB/T 7714	Zhang, Fan,Ren, Yu,Yang, Zhiqing,et al. The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading[J]. ACTA MATERIALIA,2020,188:203-214.
APA	Zhang, Fan.,Ren, Yu.,Yang, Zhiqing.,Su, Huhu.,Lu, Zhen.,...&Chen, Mingwei.(2020).The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading.ACTA MATERIALIA,188,203-214.
MLA	Zhang, Fan,et al."The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading".ACTA MATERIALIA 188(2020):203-214.