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Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys
Xu, W.; Zhang, B.; Li, X. Y.; Le, K.
Corresponding AuthorLi, X. Y.(xyli@imr.ac.cn) ; Le, K.(lu@imr.ac.cn)
2021-08-06
Source PublicationSCIENCE
ISSN0036-8075
Volume373Issue:6555Pages:683-+
AbstractHigh 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.
Funding OrganizationMinistry of Science & Technology of China ; Chinese Academy of Sciences
DOI10.1126/science.abh0700
Indexed BySCI
Languageen
Funding ProjectMinistry of Science & Technology of China[2017YFA0204401] ; Ministry of Science & Technology of China[2017YFA0700700] ; Chinese Academy of Sciences
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000681722700040
PublisherAMER ASSOC ADVANCEMENT SCIENCE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159604
Collection中国科学院金属研究所
Corresponding AuthorLi, X. Y.; Le, K.
AffiliationChinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
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-+.
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