Effect of volume fraction of LPSO phases on corrosion and mechanical properties of Mg-Zn-Y alloys
文献类型：期刊论文
| 作者 | Li, C. Q. ; Xu, D. K. ; Zeng, Z. R. ; Wang, B. J. ; Sheng, L. Y. ; Chen, X. -B. ; Han, E. H. |
| 刊名 | MATERIALS & DESIGN
 |
| 出版日期 | 2017-05-05 |
| 卷号 | 121页码:430-441 |
| 关键词 | Mg alloys LPSO phases Corrosion Electrochemical analysis Mechanical properties |
| ISSN号 | 0264-1275 |
| 通讯作者 | Xu, DK (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China. |
| 中文摘要 | Microstructural evolution, corrosion behavior and mechanical properties of cast Mg-Zn-Y alloys as a function of volume fraction of long period stacking ordered (LPSO) phases were investigated. Results revealed that 18R-LPSO phase was formed in Mg-0.9%Zn-1.6%Y (ZW12), Mg-2.1%Zn-5.2%Y (ZW25) and Mg-3.1%Zn-7.6%Y (ZW38) alloys. LPSO phases in these alloys acted as micro-cathode to accelerate corrosion progress due to their nobler nature than that of alpha-Mg matrix. The galvanic-couple effect between LPSO phases and alpha-Mg matrix dominated the corrosion rate of the cast Mg-Zn-Y alloys in the long-term corrosion process. As a result, ZW12 alloy displayed the best corrosion resistance due to the least volume fraction of micro-cathodes (i.e. LPSO phases). In addition, compared with ZW25 alloy, the compact and thick LPSO phases in ZW38 alloy hindered the corrosion progress to a small degree since it was not preferentially oriented against corrosion front. The shape of corrosion pits was correlated to the shape of Mg dendrites that was a result of the volume fraction and distribution of LPSO phases. LPSO phases could enhance mechanical strength, but the increment was slight when the volume fraction of LPSO phases reached up to 20.3%. (C) 2017 Elsevier Ltd. All rights reserved. |
| 学科主题 | Materials Science, Multidisciplinary |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China Projects [51271183, 51301172]; National Basic Research Program of China (973 Program) Project [2013CB632205]; National Key Research and Development Program of China project [2016YFB0301105]; Shenzhen Technology Innovation Plan [CXZZ20140419114548507, CXZZ20140731091722497]; Shenzhen Basic Research Project [JCYJ20150529162228734]; Innovation Fund of Institute of Metal Research (IMR); Chinese Academy of Sciences (CAS) |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78144]  |
| 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.,Zeng, Z. R.,et al. Effect of volume fraction of LPSO phases on corrosion and mechanical properties of Mg-Zn-Y alloys[J]. MATERIALS & DESIGN,2017,121:430-441. |
| APA | Li, C. Q..,Xu, D. K..,Zeng, Z. R..,Wang, B. J..,Sheng, L. Y..,...&Han, E. H..(2017).Effect of volume fraction of LPSO phases on corrosion and mechanical properties of Mg-Zn-Y alloys.MATERIALS & DESIGN,121,430-441. |
| MLA | Li, C. Q.,et al."Effect of volume fraction of LPSO phases on corrosion and mechanical properties of Mg-Zn-Y alloys".MATERIALS & DESIGN 121(2017):430-441. |
入库方式： OAI收割
来源：金属研究所
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