High corrosion resistance and weak corrosion anisotropy of an as-rolled Mg-3Al-1Zn (in wt.%) alloy with strong crystallographic texture
文献类型：期刊论文
| 作者 | Wang, B. J.; Xu, D. K.; Xin, Y. C.; Sheng, L. Y.; Han, E. H.; Xu, DK (reprint author), Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China.; Xin, YC (reprint author), Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China. |
| 刊名 | NATURE PUBLISHING GROUP
 |
| 出版日期 | 2017-11-22 |
| 卷号 | 7页码:- |
| ISSN号 | 2045-2322 |
| 英文摘要 | Combining with electrochemical corrosion measurements, immersion and hydrogen evolution testing performed in 0.9 wt.% NaCl solution at 37 degrees C, the corrosion resistance of an as-rolled Mg-3%Al-1%Zn alloy before and after a 3% compressive strain along the rolling direction was investigated. Results revealed that the corrosion behavior of differently oriented surfaces of the as-rolled samples with a strong basal texture was obviously different. Among them, the corrosion rate of sample surface with the orientation parallel to the normal direction (ND) of the plate was the fastest, the corrosion rate of sample surface with the orientation parallel to the rolling direction (RD) of the plate took the second place and the corrosion rate of sample surface with the orientation parallel to the transverse direction (TD) was the slowest. After being pre-strained, the activation of a high density of {10-12} twins could remarkably reduce the corrosion rate of surrounding alpha-Mg matrix and simultaneously weaken the corrosion anisotropy between differently oriented samples. The main reason was that similar to grain boundaries, twin boundaries acted as physical barriers to the corrosion attack. Moreover, the activated twins increased the protectiveness of surface films and then suppressed the micro corrosion couples occurred in twinned grains.; Combining with electrochemical corrosion measurements, immersion and hydrogen evolution testing performed in 0.9 wt.% NaCl solution at 37 degrees C, the corrosion resistance of an as-rolled Mg-3%Al-1%Zn alloy before and after a 3% compressive strain along the rolling direction was investigated. Results revealed that the corrosion behavior of differently oriented surfaces of the as-rolled samples with a strong basal texture was obviously different. Among them, the corrosion rate of sample surface with the orientation parallel to the normal direction (ND) of the plate was the fastest, the corrosion rate of sample surface with the orientation parallel to the rolling direction (RD) of the plate took the second place and the corrosion rate of sample surface with the orientation parallel to the transverse direction (TD) was the slowest. After being pre-strained, the activation of a high density of {10-12} twins could remarkably reduce the corrosion rate of surrounding alpha-Mg matrix and simultaneously weaken the corrosion anisotropy between differently oriented samples. The main reason was that similar to grain boundaries, twin boundaries acted as physical barriers to the corrosion attack. Moreover, the activated twins increased the protectiveness of surface films and then suppressed the micro corrosion couples occurred in twinned grains. |
| 学科主题 | Multidisciplinary Sciences |
| 语种 | 英语 |
| 资助机构 | National Key Research and Development Program of China [2016YFB0301105]; Strategic New Industry Development Special Foundation of Shenzhen [JCYJ20170306141749970]; National Natural Science Foundation of China [51701129]; Initiation Foundation of Shenyang Ligong University |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78971]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xu, DK (reprint author), Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China.; Xin, YC (reprint author), Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, B. J.,Xu, D. K.,Xin, Y. C.,et al. High corrosion resistance and weak corrosion anisotropy of an as-rolled Mg-3Al-1Zn (in wt.%) alloy with strong crystallographic texture[J]. NATURE PUBLISHING GROUP,2017,7:-. |
| APA | Wang, B. J..,Xu, D. K..,Xin, Y. C..,Sheng, L. Y..,Han, E. H..,...&Xin, YC .(2017).High corrosion resistance and weak corrosion anisotropy of an as-rolled Mg-3Al-1Zn (in wt.%) alloy with strong crystallographic texture.NATURE PUBLISHING GROUP,7,-. |
| MLA | Wang, B. J.,et al."High corrosion resistance and weak corrosion anisotropy of an as-rolled Mg-3Al-1Zn (in wt.%) alloy with strong crystallographic texture".NATURE PUBLISHING GROUP 7(2017):-. |
入库方式： OAI收割
来源：金属研究所
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