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| Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment | |
| Liu, Jing; Yang, Lixin; Zhang, Chunyan; Zhang, Bo; Zhang, Tao; Li, Yang; Wu, Kaiming; Wang, Fuhui | |
| 2019-08-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:8Pages:1644-1654 |
| Abstract | The effects of heat-treatment on corrosion behavior of Mg-15Gd-2Zn-0.39 Zr alloys were investigated through microstructure characterization, corrosion tests, and scanning Kelvin probe force microscope (SKPFM) analysis. In long-term corrosion experiments, the corrosion rates of Mg-Gd-Zn-Zr alloys were mainly determined by the effects of micro-galvanic corrosion. During heat-treatment, the beta-(Mg,Zn)(3)Gd eutectic phase in as-cast alloys transformed into a long-period stacking ordered (LPSO) phase, coupled with the precipitation of small precipitates. As heat-treatment proceeded, the local potential and the volume fraction of the LPSO phases reduced gradually compared with the eutectic phase, which resulted in a remarkable decrease of the micro-galvanic effect between the second phase and Mg matrix. As a result, the corrosion resistance of heat-treated alloys improved significantly. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Mg-Gd-Zn-Zr alloy Corrosion behavior Heat-treatment LPSO phase SKPFM |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000470677300016 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/80881 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Liu, Jing,Yang, Lixin,Zhang, Chunyan,et al. Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(8):1644-1654. |
| APA | Liu, Jing.,Yang, Lixin.,Zhang, Chunyan.,Zhang, Bo.,Zhang, Tao.,...&Wang, Fuhui.(2019).Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(8),1644-1654. |
| MLA | Liu, Jing,et al."Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.8(2019):1644-1654. |
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