IMR OpenIR
Unveiling the formation of basal texture variations based on twinning and dynamic recrystallization in AZ31 magnesium alloy during extrusion
Jiang, M. G.1,2; Xu, C.3; Yan, H.2; Fan, G. H.3; Nakata, T.4; Lao, C. S.1,5; Chen, R. S.2; Kamado, S.4; Han, E. H.2; Lu, B. H.5
Corresponding AuthorYan, H.(hyan@imr.ac.cn) ; Chen, R. S.(rschen@imr.ac.cn)
2018-09-15
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume157Pages:53-71
AbstractCommercial Mg extrusions usually develop various types of basal textures, affecting the formability and mechanical properties. The mechanisms for the formation of basal texture variations were systematically investigated for the first time based on the twinning and dynamic recrystallization (DRX) during extrusion using electron back-scatter diffraction (EBSD) characterization. The results indicate that {10 (1) over bar2} extension twins with various variants played a key role in the formation of [10 (1) over bar0] fiber texture, while twin-induced DRX mechanism associated with {10 (1) over bar1} twins made a limited contribution to overall texture evolution. The microstructure developed consecutively as a result of continuous DRX (CDRX) and discontinuous DRX (DDRX) after twinning with different nucleation of new orientations. In the unDRXed region, new DRXed grains with 30 degrees [0001] GBs preferentially nucleated via CDRX, forming preferred selection of [2 (11) over bar0] fiber orientation. Consequently, [10 (1) over bar0] fiber texture became weakened with [2 (11) over bar0] fiber component strengthening, progressively leading to the development of [10 (1) over bar0]-[2 (11) over bar0] double fiber texture. In the DRXed region, DDRX further occurred along the serrated grain boundaries and at the triple junctions of the parent grains by bulging, forming fresh DRXed grains without preferred orientation selection. Thus, the [10 (1) over bar0]-[2 (11) over bar0] double fiber texture became randomized and gradually transformed into non-fiber texture at the late stage of extrusion. Besides, typical nucleation sites for DRX and subsequent grain growth were also discussed in this study. These findings unveil that basal texture variations are attributed to the twinning and DRX mechanisms during extrusion, which leads to new insight to design new wrought Mg alloys with high performance by grain refinement and texture modification. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordMagnesium alloy Extrusion Basal texture Twinning Recrystallization
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; State Key Program of National Natural Science of China ; National Basic Research Program of China (973 Program) ; JST ; Advanced Low Carbon Technology Research and Development Program (ALCA) ; JSPS ; Key Project Fund for Science and Technology Development of Guangdong Province ; Shenzhen Peacock Plan Technology Innovation Project ; Dalian University of Technology High-level Talents (Innovation Team) Research Project
DOI10.1016/j.actamat.2018.07.014
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB0301104] ; National Natural Science Foundation of China (NSFC)[51601193] ; State Key Program of National Natural Science of China[51531002] ; National Basic Research Program of China (973 Program)[2013CB632202] ; JST ; Advanced Low Carbon Technology Research and Development Program (ALCA)[12102886] ; JSPS[16K18266] ; Key Project Fund for Science and Technology Development of Guangdong Province[2017B090911014] ; Shenzhen Peacock Plan Technology Innovation Project[KQJSCX20170327150948772] ; Dalian University of Technology High-level Talents (Innovation Team) Research Project[KCYCXPT2016003]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000445318800006
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:93[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129541
Collection中国科学院金属研究所
Corresponding AuthorYan, H.; Chen, R. S.
Affiliation1.Shenzhen Univ, Coll Mechatron & Control Engn, 3688 Nanhai Ave, Shenzhen 518060, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, 62 Wencui Rd, Shenyang 110016, Liaoning, Peoples R China
3.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
4.Nagaoka Univ Technol, Dept Mech Engn, Nagaoka, Niigata 9402188, Japan
5.Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Peoples R China
Recommended Citation
GB/T 7714
Jiang, M. G.,Xu, C.,Yan, H.,et al. Unveiling the formation of basal texture variations based on twinning and dynamic recrystallization in AZ31 magnesium alloy during extrusion[J]. ACTA MATERIALIA,2018,157:53-71.
APA Jiang, M. G..,Xu, C..,Yan, H..,Fan, G. H..,Nakata, T..,...&Lu, B. H..(2018).Unveiling the formation of basal texture variations based on twinning and dynamic recrystallization in AZ31 magnesium alloy during extrusion.ACTA MATERIALIA,157,53-71.
MLA Jiang, M. G.,et al."Unveiling the formation of basal texture variations based on twinning and dynamic recrystallization in AZ31 magnesium alloy during extrusion".ACTA MATERIALIA 157(2018):53-71.
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