Abnormal Hall–Petch behavior in nanocrystalline MgO ceramic
✍ Scribed by David Ehre; Rachman Chaim
- Book ID
- 106394322
- Publisher
- Springer
- Year
- 2008
- Tongue
- English
- Weight
- 349 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0022-2461
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
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,
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
A simplified procedure for an order of magnitude experimental validation of a recently proposed model for the strain-rate dependent deformation of nanostructured materials is given. The grain size dependence of hardness predicted by the model in the range where the inverse Hall-Petch effect is obser