a r t i c l e i n f o a b s t r a c t Classical Hall-Petch relation for large grained polycrystals is usually derived using the model of dislocation pile-up first investigated mathematically by Nabarro and coworkers. In this paper the mechanical properties of nanocrystalline materials are reviewed,
On the validity of the hall-petch relationship in nanocrystalline materials
β Scribed by A.H. Chokshi; A. Rosen; J. Karch; H. Gleiter
- Book ID
- 118974128
- Publisher
- Elsevier Science
- Year
- 1989
- Weight
- 253 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0036-9748
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π SIMILAR VOLUMES
An inverse Hall-Petch effect has been observed for nanocrystalline materials by a large number of researchers. This effect implies that nanocrystalline materials get softer as grain size is reduced below a critical value. Postulated explanations for this behavior include dislocation-based models, di
We propose a composite model to explain the phenomena of strength softening with decreasing the grain size, which was reported in some nanocrystalline (nc) materials. We assume that a nc material consists of a grain interior and an amorphous grain-boundary layer. The grain interior deforms elastical