Natural ageing responses of duplex structured Mg-Li based alloys
文献类型：期刊论文
| 作者 | Li, C. Q. ; Xu, D. K. ; Wang, B. J. ; Sheng, L. Y. ; Qiao, Y. X. ; Han, E. H. |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2017-01-05 |
| 卷号 | 7页码:- |
| ISSN号 | 2045-2322 |
| 通讯作者 | Xu, DK (reprint author), Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China. |
| 中文摘要 | Natural ageing responses of duplex structured Mg-6% Li and Mg-6% Li-6% Zn-1.2% Y alloys have been investigated. Microstructural analyses revealed that the precipitation and coarsening process of alpha-Mg particles could occur in beta-Li phases of both two alloys during ageing process. Since a certain amount of Mg atoms in beta-Li phases were consumed for the precipitation of abundant tiny MgLiZn particles, the size of alpha-Mg precipitates in Mg-6% Li-6% Zn-1.2% Y alloy was relatively smaller than that in Mg-6% Li alloy. Micro hardness measurements demonstrated that with the ageing time increasing, the alpha-Mg phases in Mg-6% Li alloy could have a constant hardness value of 41 HV, but the contained beta-Li phases exhibited a slight age-softening response. Compared with the Mg-6% Li alloy, the age-softening response of beta-Li phases in Mg-6% Li-6% Zn-1.2% Y alloy was much more profound. Meanwhile, a normal age-hardening response of alpha-Mg phases was maintained. Tensile results indicated that obvious ageing-softening phenomenon in terms of macro tensile strength occurred in both two alloys. Failure analysis demonstrated that for the Mg-6% Li alloy, cracks were preferentially initiated at alpha-Mg/beta-Li interfaces. For the Mg-6% Li-6% Zn-1.2% Y alloy, cracks occurred at both alpha-Mg/beta-Li interfaces and slip bands in alpha-Mg and beta-Li phases. |
| 学科主题 | Multidisciplinary Sciences |
| 资助信息 | National Natural Science Foundation of China [51271183, 51301172]; National Basic Research Program of China (973 Program) [2013CB632205]; National Key Research and Development Program of China [2016YFB0301105]; Shenzhen Basic Research Project [JCYJ20150529162228734]; Innovation Fund of Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS) |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78349]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Li, C. Q.,Xu, D. K.,Wang, B. J.,et al. Natural ageing responses of duplex structured Mg-Li based alloys[J]. SCIENTIFIC REPORTS,2017,7:-. |
| APA | Li, C. Q.,Xu, D. K.,Wang, B. J.,Sheng, L. Y.,Qiao, Y. X.,&Han, E. H..(2017).Natural ageing responses of duplex structured Mg-Li based alloys.SCIENTIFIC REPORTS,7,-. |
| MLA | Li, C. Q.,et al."Natural ageing responses of duplex structured Mg-Li based alloys".SCIENTIFIC REPORTS 7(2017):-. |
入库方式： OAI收割
来源：金属研究所
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