| Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys | |
| Xu, W.; Zhang, B.; Li, X. Y.; Le, K. | |
| Corresponding Author | Li, X. Y.(xyli@imr.ac.cn) ; Le, K.(lu@imr.ac.cn) |
| 2021-08-06 | |
| Source Publication | SCIENCE
 |
| ISSN | 0036-8075 |
| Volume | 373Issue:6555Pages:683-+ |
| Abstract | 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. |
| Funding Organization | Ministry of Science & Technology of China ; Chinese Academy of Sciences |
| DOI | 10.1126/science.abh0700 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Ministry of Science & Technology of China[2017YFA0204401] ; Ministry of Science & Technology of China[2017YFA0700700] ; Chinese Academy of Sciences |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| WOS ID | WOS:000681722700040 |
| Publisher | AMER ASSOC ADVANCEMENT SCIENCE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159604 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, X. Y.; Le, K. |
| Affiliation | Chinese 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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