Effects of coherency strain on structure and migration of a coherent grain boundary in Cu
| Autor: | Sung Bo Lee, Heung Nam Han, Jinwook Jung, Yanghoo Kim, Seung Jo Yoo |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Mechanical Engineering Coherency strain 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surface energy Mechanics of Materials Transmission electron microscopy Lattice (order) 0103 physical sciences General Materials Science Grain boundary 0210 nano-technology Anisotropy Normal |
| Zdroj: | Materials Characterization. 151:436-444 |
| ISSN: | 1044-5803 |
| DOI: | 10.1016/j.matchar.2019.02.042 |
| Popis: | In situ high-resolution transmission electron microscopy of atomic structures of a coherent grain boundary is reported in a Cu bicrystal specimen composed of two grains with surface normal directions of [1 0 0] and [1 1 0]. Although the surface energy anisotropy favors the growth of the [1 0 0]-oriented grain, grain-boundary migration does not occur. Instead, inside the [1 0 0]-oriented grain standing off the grain boundary is a kind of coherent interface observed. We relate these observations to the development of a coherent strain due to a lattice misfit at the grain boundary. |
| Databáze: | OpenAIRE |
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