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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 PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:8Pages:1644-1654
AbstractThe 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.
KeywordMg-Gd-Zn-Zr alloy Corrosion behavior Heat-treatment LPSO phase SKPFM
Indexed BySCI
Language英语
WOS IDWOS:000470677300016
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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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