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Quasi-in-situ observations of low-angle grain boundaries, twins and texture evolution during continuous annealing in a cold-rolled Mg-Zn-Gd alloy
Zhao, L. Y.1,2; Yan, H.1; Chen, R. S.1; Han, En-Hou1
Corresponding AuthorYan, H.(hyan@imr.ac.cn) ; Chen, R. S.(rschen@imr.ac.cn)
2020-12-01
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume170Pages:9
AbstractThe evolution of texture, low-angle grain boundaries and twins in a cold-rolled Mg-Zn-Gd alloy during continuous annealing at 250 degrees C were tracked by quasi-in-situ X-ray diffraction and quasi-in-situ electron backscatter diffraction method, and the influence of extension twins on texture was discussed. The results show that during the whole annealing process, the main texture component is always split toward transverse direction (TD) and the tilting angle hardly changes. However, the peak position changes between the two TD texture components. During continuous annealing, most pre-existing low-angle grain boundaries retain their original misorientation (including angles and axes) and hardly migrate. In addition, a new low-angle grain boundary occurs when two grains with similar orientation grow to connect with each other. Boundaries of pre-existing extension twins tend to migrate with different velocity. Moreover, with the migration, extension twins grow and gradually swallow their matrix grains completely, and thus re-orientate the TD orientations of twinned-grains from one side to another. Considering that nuclei display no preferred orientation between +TD and -TD, the changing peak position is considered to be caused by the migration of ETBs.y
KeywordTexture Mg alloys Orientation Extension twins Grain boundary Quasi-in-situ EBSD
Funding OrganizationNatural Science Foundation of Liaoning Province ; National Natural Science Foundation of China (NSFC) ; State Key Program of National Natural Science of China ; National Key Research and Development Program of China ; National Basic Research Program of China (973 Program)
DOI10.1016/j.matchar.2020.110697
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of Liaoning Province[2020-MS-004] ; National Natural Science Foundation of China (NSFC)[51701218] ; National Natural Science Foundation of China (NSFC)[51601193] ; State Key Program of National Natural Science of China[51531002] ; National Key Research and Development Program of China[2016YFB0301104] ; National Basic Research Program of China (973 Program)[2013CB632202]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000598116700001
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158808
Collection中国科学院金属研究所
Corresponding AuthorYan, H.; Chen, R. S.
Affiliation1.Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, 62 Wencui Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhao, L. Y.,Yan, H.,Chen, R. S.,et al. Quasi-in-situ observations of low-angle grain boundaries, twins and texture evolution during continuous annealing in a cold-rolled Mg-Zn-Gd alloy[J]. MATERIALS CHARACTERIZATION,2020,170:9.
APA Zhao, L. Y.,Yan, H.,Chen, R. S.,&Han, En-Hou.(2020).Quasi-in-situ observations of low-angle grain boundaries, twins and texture evolution during continuous annealing in a cold-rolled Mg-Zn-Gd alloy.MATERIALS CHARACTERIZATION,170,9.
MLA Zhao, L. Y.,et al."Quasi-in-situ observations of low-angle grain boundaries, twins and texture evolution during continuous annealing in a cold-rolled Mg-Zn-Gd alloy".MATERIALS CHARACTERIZATION 170(2020):9.
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