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Deformation and fracture mechanisms of an annealing-tailored "bimodal" grain-structured Mg alloy
Wang, Baojie; Xu, Daokui; Sheng, Liyuan; Han, Enhou; Sun, Jie
2019-11-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:11Pages:2423-2429
AbstractThrough investigating and comparing the mechanical behavior of an as-rolled Mg-3%Al-1%Zn(wt%) alloy before and after annealing treatments, it was revealed that the formation of annealing-tailored bimodal grain structure ensured the 330 degrees C/4 h samples having a good combination of tensile strength and plasticity. Failure analysis demonstrated that for the as-rolled and 330 degrees C/1 h samples with fine grain structure, their plastic deformation was mainly attributed to basal slips, whereas the deformation mechanism in the bimodal grain-structured samples was dominated by basal slips in fine grains and twinning in coarse grains. For the 330 degrees C/8 h samples with coarse grain structure, high densities of twins were activated. Meanwhile, basal slips occurred in the twinned and un-twinned areas of coarse grains and could pass through twin boundaries. For differently treated samples, cracking preferentially occurred along slip bands, resulting in their transgranular fractures. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordMg alloy Grain structure Deformation mechanism Cracking Fracture
Indexed BySCI
Language英语
WOS IDWOS:000497965900001
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80646
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang, Baojie,Xu, Daokui,Sheng, Liyuan,et al. Deformation and fracture mechanisms of an annealing-tailored "bimodal" grain-structured Mg alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(11):2423-2429.
APA Wang, Baojie,Xu, Daokui,Sheng, Liyuan,Han, Enhou,&Sun, Jie.(2019).Deformation and fracture mechanisms of an annealing-tailored "bimodal" grain-structured Mg alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(11),2423-2429.
MLA Wang, Baojie,et al."Deformation and fracture mechanisms of an annealing-tailored "bimodal" grain-structured Mg alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.11(2019):2423-2429.
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