| Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg-Gd-Y alloy | |
| Lu, S. H.1,2; Wu, D.2; Yan, M.1; Chen, R. S.2 | |
| Corresponding Author | Yan, M.(yanm@sustech.edu.cn) ; Chen, R. S.(rschen@imr.ac.cn) |
| 2021-11-01 | |
| Source Publication | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| ISSN | 2238-7854 |
| Volume | 15Pages:4502-4515 |
| Abstract | The microstructure and tensile properties of twin and grain size strengthening Mg-6.85Gd -5.79Y-0.44Zr alloy have been investigated and characterized by optical microscopy (OM), scanning electron microscopy (SEM), and electron back-scattering diffraction (EBSD). Their room temperature tensile results exhibit that twin strengthening can enhance the strength of Mg-Gd-Y-Zr alloy but sacrifice its ductility or toughness. This should be attributed that lenticular {10-12} twins with high-stress localization directly lead to a brittle failure. In contrast, the strength, ductility, and toughness were synchronously improved for the grain size strengthening Mg-Gd-Y-Zr alloy, i.e., the ultimate tensile strength, uniform elongation, and static toughness increased to 254 (259-245) MPa, 1.02 (1.40-0.55)%, and 5.7 (6.7 -4.2) MJ/m(3), respectively. This ductility increment should have resulted from fine recrystallization that was free from stress concentration and accommodated the tensile strain by more non-basal slip and grain boundary sliding or grain rotation. (C) 2021 The Authors. Published by Elsevier B.V. |
| Keyword | Twin strengthening Grain size strengthening Tensile properties Mg-Gd-Y alloy Multi-directionally impact forge |
| Funding Organization | National Natural Science Foundation of China ; National Science and Technology Major Project of China ; Natural Science Foundation of Liaoning Province |
| DOI | 10.1016/j.jmrt.2021.10.060 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52171055] ; National Natural Science Foundation of China[51301173] ; National Natural Science Foundation of China[51601193] ; National Natural Science Foundation of China[51701218] ; National Science and Technology Major Project of China[2017ZX04014001] ; Natural Science Foundation of Liaoning Province[20180550799] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000717684300006 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/167466 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yan, M.; Chen, R. S. |
| Affiliation | 1.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Lu, S. H.,Wu, D.,Yan, M.,et al. Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg-Gd-Y alloy[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2021,15:4502-4515. |
| APA | Lu, S. H.,Wu, D.,Yan, M.,&Chen, R. S..(2021).Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg-Gd-Y alloy.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,15,4502-4515. |
| MLA | Lu, S. H.,et al."Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg-Gd-Y alloy".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 15(2021):4502-4515. |
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