Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins
文献类型：期刊论文
| 作者 | Yan, Changjian3,4; Xin, Yunchang3; Chen, Xiao-Bo5; Xu, Daokui6; Chu, Paul K.1; Liu, Chaoqiang7; Guan, Bo2; Huang, Xiaoxu2; Liu, Qing3 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2021-07-29 |
| 卷号 | 12期号:1页码:9 |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/s41467-021-24939-3 |
| 通讯作者 | Xin, Yunchang(ycxin@cqu.edu.cn) ; Xu, Daokui() |
| 英文摘要 | Conventional ultrafine-grains can generate high strength in Mg alloys, but significant tradeoff of corrosion resistance due to inclusion of a large number of non-equilibrium grain boundaries. Herein, an ultrafine-grain structure consisting of dense ultrafine twins is prepared, yielding a high strength up to 469MPa and decreasing the corrosion rate by one order of magnitude. Generally, the formation of dense ultrafine twins in Mg alloys is rather difficult, but a carefully designed multi-directional compression treatment effectively stimulates twinning nucleation within twins and refines grain size down to 300nm after 12-passes compressions. Grain-refinement by low-energy twins not only circumvents the detrimental effects of non-equilibrium grain boundaries on corrosion resistance, but also alters both the morphology and distribution of precipitates. Consequently, micro-galvanic corrosion tendency decreases, and severe localized corrosion is suppressed completely. This technique has a high commercial viability as it can be readily implemented in industrial production. Conventional ultrafine grains can generate high-strength Mg alloys, but non-equilibrium grain boundaries deteriorates their corrosion resistance. Here, the authors present ultrafine grained Mg alloys with dense twins that display high strength and reduced corrosion rate by one order of magnitude. |
| 资助项目 | National Natural Science Foundation of China[51871032] ; National Natural Science Foundation of China[52071039] ; Natural Science Foundation of Jiangsu Province[BK20202010] ; Ministry of Education[B16007] ; City University of Hong Kong Strategic Research Grant (SRG)[7005264] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000681059800010 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Ministry of Education ; City University of Hong Kong Strategic Research Grant (SRG) |
| 源URL | [http://ir.imr.ac.cn/handle/321006/159622]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xin, Yunchang; Xu, Daokui |
| 作者单位 | 1.City Univ Hong Kong, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Hong Kong, Peoples R China 2.Chongqing Univ, Coll Mat Sci & Engn, Int Joint Lab Light Alloys, Chongqing, Peoples R China 3.Nanjing Tech Univ, Key Lab Light Weight Mat, Nanjing, Peoples R China 4.Inst Corros Sci & Technol, Shenyang, Guangdong, Peoples R China 5.RMIT Univ, Sch Engn, Carlton, Vic, Australia 6.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang, Peoples R China 7.Cent South Univ, State Key Lab Powder Met, Changsha, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Changjian,Xin, Yunchang,Chen, Xiao-Bo,et al. Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins[J]. NATURE COMMUNICATIONS,2021,12(1):9. |
| APA | Yan, Changjian.,Xin, Yunchang.,Chen, Xiao-Bo.,Xu, Daokui.,Chu, Paul K..,...&Liu, Qing.(2021).Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins.NATURE COMMUNICATIONS,12(1),9. |
| MLA | Yan, Changjian,et al."Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins".NATURE COMMUNICATIONS 12.1(2021):9. |
入库方式： OAI收割
来源：金属研究所
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