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

doi:10.1126/science.abh0700

IMR OpenIR

	Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys
	Xu, W.; Zhang, B.; Li, X. Y.; Le, K.
通讯作者	Li, X. Y.(xyli@imr.ac.cn) ; Le, K.(lu@imr.ac.cn)
	2021-08-06
发表期刊	SCIENCE
ISSN	0036-8075
卷号	373 期号:6555 页码:683-+
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.
资助者	Ministry of Science & Technology of China ; Chinese Academy of Sciences
DOI	10.1126/science.abh0700
收录类别	SCI
语种	英语
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
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000681722700040
出版者	AMER ASSOC ADVANCEMENT SCIENCE
引用统计	被引频次：89[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/321006/159604
专题	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-+.