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Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys

文献类型：期刊论文

作者Xu, W.; Zhang, B.; Li, X. Y.; Le, K.
刊名SCIENCE
出版日期2021-08-06
卷号373期号:6555页码:683-+
ISSN号0036-8075
DOI10.1126/science.abh0700
通讯作者Li, X. Y.(xyli@imr.ac.cn) ; Le, K.(lu@imr.ac.cn)
英文摘要High atomic diffusivity in metals enables substantial tuneability of their structure and properties by tailoring the diffusional processes, but this causes their customized properties to be unstable at elevated temperatures. Eliminating diffusive interfaces by fabricating single crystals or heavily alloying helps to address this issue but does not inhibit atomic diffusion at high homologous temperatures. We discovered that the Schwarz crystal structure was effective at suppressing atomic diffusion in a supersaturated aluminum-magnesium alloy with extremely fine grains. By forming these stable structures, diffusion-controlled intermetallic precipitation from the nanosized grains and their coarsening were inhibited up to the equilibrium melting temperature, around which the apparent across-boundary diffusivity was reduced by about seven orders of magnitude. Developing advanced engineering alloys using the Schwarz crystal structure may lead to useful properties for high-temperature applications.
资助项目Ministry of Science & Technology of China[2017YFA0204401] ; Ministry of Science & Technology of China[2017YFA0700700] ; Chinese Academy of Sciences
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000681722700040
出版者AMER ASSOC ADVANCEMENT SCIENCE
资助机构Ministry of Science & Technology of China ; Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/159603]  
专题金属研究所_中国科学院金属研究所
通讯作者Li, X. Y.; Le, K.
作者单位Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Xu, W.,Zhang, B.,Li, X. Y.,et al. Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys[J]. SCIENCE,2021,373(6555):683-+.
APA Xu, W.,Zhang, B.,Li, X. Y.,&Le, K..(2021).Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys.SCIENCE,373(6555),683-+.
MLA Xu, W.,et al."Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys".SCIENCE 373.6555(2021):683-+.

入库方式： OAI收割

来源：金属研究所

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