<p>Microstructure evolution of twinning-induced shear bands and correlation with 'RD-split' texture during hot rolling in a Mg-1.1Zn-0.76Y-0.56Zr alloy</p>

doi:10.1016/j.matchar.2022.111853

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructure evolution of twinning-induced shear bands and correlation with 'RD-split' texture during hot rolling in a Mg-1.1Zn-0.76Y-0.56Zr alloy
	Shi, B. Q.1,5; Wang, Y. Z.5; Shang, X. L.2; Zhao, L. Y.1,5; Li, C. Q.4; Chen, D. C.1,5; Nie, B. H.1,5; Chen, R. S.3; Ke, W.3
刊名	MATERIALS CHARACTERIZATION
	2022-05-01
卷号	187 页码:14
关键词	Magnesium alloys Shear bands Twinning Texture Rolling
ISSN号	1044-5803
DOI	10.1016/j.matchar.2022.111853
通讯作者	Li, C. Q.(chuanqiang.li@gdut.edu.cn) ; Chen, R. S.(rschen@imr.ac.cn)
英文摘要	Unlike the recrystallization-induced shear band mechanism which has been well accepted for the RE-free Mg alloys during rolling, an understanding of deformed microstructure evolution (twin mode/variant selection and dislocations) at different strains is crucial for interpreting the shear band mechanism in the RE-containing Mg alloys upon hot rolling. In this study, a Mg-1.1Zn-0.76Y-0.56Zr alloy ingot was subjected to hot rolling at 440 C with single-pass reductions of 10-50%, and the microstructure evolution and texture development of this hot rolled plates at different reductions were investigated, with aim to disclose the roles of different types of twins/variants and dislocation mechanisms in the shear band (SB) formation and their correlation with the macro-texture characteristics. As the dominate twinning mode for most parent grains at lower reductions, and the primary {10-12} extension twins/variants together with basal slip activated in twins contribute to formation of basal texture in the twinned grains, thus subsequently facilitating the operation of secondary {10-11} and {10-13} compression twins and following {10-12} twins. Afterwards cross-grain boundary (GB) paired twins for compression twin and their double twins were frequently observed at the nearby basal-oriented parent grains with low misorientation (& LE;34.5), which should correspond to the predecessor of SBs. Further EBSD observation at higher reductions (R0.4 and R0.5) reveals that most of the banding structures are distributed homogenously and are likely transformed from the {10-11}-{10-12} twins, which are the predominant twin types under such state. The 'RD-split' textures start to be formed at lower reductions (R0.3) and keeps stable at higher reductions (R0.4-R0.5), which were explained by the correlations with some variant pairs of {10-12} twins and/or {10-11}-{10-12} twins predicted by Schimid factor analysis as well as shear bands. Nevertheless, the contributions of slip to the 'RD-split' texture could be ignored on basis of corresponding EBSD analysis and reappearance of such texture after rolling at a low temperature (170 ?).
资助项目	Basic and Applied Basic Research Fund of Guangdong Province of China[2019A1515110573] ; Basic and Applied Basic Research Fund of Guangdong Province of China[2019A1515110528] ; State Key Laboratory for Mechanical Behavior of Materials[20212312] ; National Natural Science Foundation of China[51801029] ; National Natural Science Foundation of China[51901047] ; Key R & D projects in Guangdong Province[2020B010186001] ; Guangdong Province Science and technology program[2020B121202002] ; Core technology research project of Foshan[1920001000412] ; R&D plan for key areas in Jiangxi Province[20201BBE51009] ; Special Innovation Projects of Universities in Guangdong Province[2018KTSCX240] ; National Key Research and Development Program of China[2016YFB0301104]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000793611900001
资助机构	Basic and Applied Basic Research Fund of Guangdong Province of China ; State Key Laboratory for Mechanical Behavior of Materials ; National Natural Science Foundation of China ; Key R & D projects in Guangdong Province ; Guangdong Province Science and technology program ; Core technology research project of Foshan ; R&D plan for key areas in Jiangxi Province ; Special Innovation Projects of Universities in Guangdong Province ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173908]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, C. Q.; Chen, R. S.
作者单位	1.Guangdong Key Lab Hydrogen Energy Technol, Foshan 528000, Peoples R China 2.GD Midea Air Conditioning Equipment Co Ltd, Foshan 528311, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, Shenyang 110016, Peoples R China 4.Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510006, Peoples R China 5.Foshan Univ, Sch Mat Sci & Hydrogen Energy, Foshan 528000, Peoples R China
推荐引用方式 GB/T 7714	Shi, B. Q.,Wang, Y. Z.,Shang, X. L.,et al. Microstructure evolution of twinning-induced shear bands and correlation with 'RD-split' texture during hot rolling in a Mg-1.1Zn-0.76Y-0.56Zr alloy [J]. MATERIALS CHARACTERIZATION,2022,187:14.
APA	Shi, B. Q..,Wang, Y. Z..,Shang, X. L..,Zhao, L. Y..,Li, C. Q..,...&Ke, W..(2022). Microstructure evolution of twinning-induced shear bands and correlation with 'RD-split' texture during hot rolling in a Mg-1.1Zn-0.76Y-0.56Zr alloy .MATERIALS CHARACTERIZATION,187,14.
MLA	Shi, B. Q.,et al." Microstructure evolution of twinning-induced shear bands and correlation with 'RD-split' texture during hot rolling in a Mg-1.1Zn-0.76Y-0.56Zr alloy ".MATERIALS CHARACTERIZATION 187(2022):14.