| Stability of nanocrystalline metals: The role of grain-boundary chemistry and structure | |
| Schuh, Christopher A.1; Lu, Ke2 | |
| 通讯作者 | Schuh, Christopher A.(schuh@mit.edu) |
| 2021-03-08 | |
| 发表期刊 | MRS BULLETIN
 |
| ISSN | 0883-7694 |
| 页码 | 11 |
| 摘要 | Nanocrystalline metals are transitioning from laboratory curiosities to engineering materials, in large part due to advances in improving their stability, making their exceptional properties more predictable and accessible. Nanoscale grains typically have a very strong innate tendency to coarsen, but the grain-boundary structure can be designed and tuned to lower its excess energy, reducing both the driving force for coarsening and the grain-boundary mobility. This article reviews two major strategies for achieving low-energy grain boundaries in nanocrystalline structures. First, grain-boundary alloying is discussed, including grain-boundary segregation and its energetic competition with the formation of second phases; with sufficient grain-boundary segregation tendency it is possible to stabilize nanostructures to high temperatures. Second, methods of achieving low-energy crystallographic grain-boundary structures are discussed, including the formation of nanotwinned structures and relaxing grain boundaries into low-energy structures through their interactions with partial dislocations. Both of these strategies have led to effective and implementable stable nanocrystalline materials, and point to many directions for future advancements. |
| 资助者 | Ministry of Science and Technology of China ; Chinese Academy of Sciences ; US Department of Energy, Office of Basic Energy Sciences |
| DOI | 10.1557/s43577-021-00055-x |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Ministry of Science and Technology of China[2017YFA0204401] ; Chinese Academy of Sciences ; US Department of Energy, Office of Basic Energy Sciences[DE-SC0020180] |
| WOS研究方向 | Materials Science ; Physics |
| WOS类目 | Materials Science, Multidisciplinary ; Physics, Applied |
| WOS记录号 | WOS:000626480100001 |
| 出版者 | SPRINGER HEIDELBERG |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/161711 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Schuh, Christopher A. |
| 作者单位 | 1.MIT, Dept Mat Sci & Engn, Boston, MA 02138 USA 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Schuh, Christopher A.,Lu, Ke. Stability of nanocrystalline metals: The role of grain-boundary chemistry and structure[J]. MRS BULLETIN,2021:11. |
| APA | Schuh, Christopher A.,&Lu, Ke.(2021).Stability of nanocrystalline metals: The role of grain-boundary chemistry and structure.MRS BULLETIN,11. |
| MLA | Schuh, Christopher A.,et al."Stability of nanocrystalline metals: The role of grain-boundary chemistry and structure".MRS BULLETIN (2021):11. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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