Breaking the purity-stability dilemma in pure Cu with grain boundary relaxation

doi:10.1016/j.mattod.2022.03.002

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	Breaking the purity-stability dilemma in pure Cu with grain boundary relaxation
	Fu, Huangliu 1,2; Zhou, Xin 2; Xue, Hongtao 3; Li, Xiuyan 2; Lu, K.2
刊名	Materials Today
	2022-05-01
卷号	55 页码:66-73
关键词	Copper Manufacture Stability Breakings Grain boundaries relaxations Grain-boundaries Impurity atoms Impurity effect Nanograined metal Pure metals Purity-stability dilemma Ultra high purity Ultrahigh-purity copper
ISSN号	1369-7021
DOI	10.1016/j.mattod.2022.03.002
英文摘要	High purity metals are increasingly demanded in modern manufacturing industries, but their processing and applications are limited by a dilemma that purer metals are thermally and mechanically less stable. The reduced stability of pure metals originates from the weakened drag effect of impurity atoms on the mobility of grain boundaries (GBs) that are hard to stabilize without alloying. Following recent studies on stabilizing nanograined metals by tailoring structures of GBs, here we report that structural relaxation of GBs breaks the purity-stability dilemma in pure Cu. Contrary to the conventional impurity effect, thermal stability and hardness of nanograined Cu samples with relaxed GBs increase (rather than decrease) with higher purities. The discovered anomalous impurity effect, owing to suppression of GB relaxation process with impurity atoms, offers an alternative vector to stabilizing purer metals for advanced processing and applications. © 2022 Elsevier Ltd
WOS研究方向	Materials Science
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000836434400010
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158511]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang; 110016, China; 2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang; 110016, China; 3.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Fu, Huangliu,Zhou, Xin,Xue, Hongtao,et al. Breaking the purity-stability dilemma in pure Cu with grain boundary relaxation[J]. Materials Today,2022,55:66-73.
APA	Fu, Huangliu,Zhou, Xin,Xue, Hongtao,Li, Xiuyan,&Lu, K..(2022).Breaking the purity-stability dilemma in pure Cu with grain boundary relaxation.Materials Today,55,66-73.
MLA	Fu, Huangliu,et al."Breaking the purity-stability dilemma in pure Cu with grain boundary relaxation".Materials Today 55(2022):66-73.