Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins

doi:10.1038/s41467-021-24939-3

IMR OpenIR

	Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins
	Yan, Changjian 1,2; Xin, Yunchang 1; Chen, Xiao-Bo 3; Xu, Daokui 4; Chu, Paul K.5; Liu, Chaoqiang 6; Guan, Bo 7; Huang, Xiaoxu 7; Liu, Qing 1
通讯作者	Xin, Yunchang(ycxin@cqu.edu.cn) ; Xu, Daokui()
	2021-07-29
发表期刊	NATURE COMMUNICATIONS
ISSN	2041-1723
卷号	12 期号:1 页码:9
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.
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Ministry of Education ; City University of Hong Kong Strategic Research Grant (SRG)
DOI	10.1038/s41467-021-24939-3
收录类别	SCI
语种	英语
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
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000681059800010
出版者	NATURE PORTFOLIO
引用统计	被引频次：149[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159623
专题	中国科学院金属研究所
通讯作者	Xin, Yunchang; Xu, Daokui
作者单位	1.Nanjing Tech Univ, Key Lab Light Weight Mat, Nanjing, Peoples R China 2.Inst Corros Sci & Technol, Shenyang, Guangdong, Peoples R China 3.RMIT Univ, Sch Engn, Carlton, Vic, Australia 4.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang, Peoples R China 5.City Univ Hong Kong, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Hong Kong, Peoples R China 6.Cent South Univ, State Key Lab Powder Met, Changsha, Peoples R China 7.Chongqing Univ, Coll Mat Sci & Engn, Int Joint Lab Light Alloys, Chongqing, 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.