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Hall-Petch relationship, twinning responses and their dependences on grain size in the rolled Mg-Zn and Mg-Y alloys
Shi, B. Q.; Cheng, Y. Q.; Shang, X. L.; Yan, H.; Chen, R. S.; Ke, W.
2019-01-16
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume743Pages:558-566
AbstractThe rolled Mg-1.02Zn alloys with strong basal-textures and Mg-0.76Y alloys with weakened basal-textures were subjected to annealing in order to obtain different grain structures meanwhile keeping the textures nearly unchanged. Then tension testing and microstructure examination were applied to the Mg-1.02Zn and Mg-0.76Y alloys with different grain structures, aiming to validate the Hall-Petch relationship and related inner deformation modes. The tensile testing results show that the Mg-1.02Zn specimens exhibit two slope (k) of Hall-Petch relationships, that is, the coarse-grained ( > 49 mu m) specimens reveal an abnormally enhanced tendency of k (similar to 472 MPa mu m(1/2)) with increased strains while fine-grained (<= 49 mu m) specimens exhibit a slightly decreased tendency of k with increased strains. Contrastively, the Mg-0.76Y specimens follow a single slope of Hall-Petch relationship well in the grain regime with slightly declined k with increased strains. That could be attributed to the distinguished twinning responses and/or twinning-slipping interactions dependence of grain size in the studied alloys with different initial textures.
KeywordHall-Petch relationship Twinning Texture Grain size Magnesium alloys
Indexed BySCI
Language英语
WOS IDWOS:000456891500063
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81448
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Shi, B. Q.,Cheng, Y. Q.,Shang, X. L.,et al. Hall-Petch relationship, twinning responses and their dependences on grain size in the rolled Mg-Zn and Mg-Y alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:558-566.
APA Shi, B. Q.,Cheng, Y. Q.,Shang, X. L.,Yan, H.,Chen, R. S.,&Ke, W..(2019).Hall-Petch relationship, twinning responses and their dependences on grain size in the rolled Mg-Zn and Mg-Y alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,558-566.
MLA Shi, B. Q.,et al."Hall-Petch relationship, twinning responses and their dependences on grain size in the rolled Mg-Zn and Mg-Y alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):558-566.
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