期刊
MATERIALS
卷 12, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/ma12122003
关键词
single crystal; polycrystalline material; thin film; deformation; mechanism; model
类别
资金
- Technological Innovation R&D Program - Small and Medium Business Administration (SMBA, Korea) [S2598148]
- Commercialization Promotion Agency for R&D Outcomes (COMPA) - Ministry of Science and ICT (MSIT) [2018_RND_002_0064]
- Korea Technology & Information Promotion Agency for SMEs (TIPA) [S2598148] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
With the rapid development of nano-preparation processes, nanocrystalline materials have been widely developed in the fields of mechanics, electricity, optics, and thermal physics. Compared to the case of coarse-grained or amorphous materials, plastic deformation in nanomaterials is limited by the reduction in feature size, so that they generally have high strength, but the toughness is relatively high. The reciprocal relationship between the strength and toughness of nanomaterials limits the large-scale application and development of nanomaterials. Therefore, the maintenance of high toughness while improving the strength of nanomaterials is an urgent problem to be solved. So far, although the relevant mechanism affecting the deformation of nanocrystalline materials has made a big breakthrough, it is still not very clear. Therefore, this paper introduces the basic deformation type, mechanism, and model of single crystals, polycrystalline materials, and thin films, and aims to provide literature support for future research.
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