Inverse Hall-Petch Effect of Hardness in Nanocrystalline Ta Films
✍ Scribed by Cao, Zhen Hua; Meng, Xiang Kang
- Book ID
- 121697209
- Publisher
- Trans Tech Publications, Ltd.
- Year
- 2011
- Tongue
- English
- Weight
- 589 KB
- Volume
- 378-379
- Category
- Article
- ISSN
- 1662-8958
No coin nor oath required. For personal study only.
📜 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
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
We have used a high-energy ball mill to prepare single-phased nanocrystalline Fe, Fe 90 Ni 10 , Fe 85 Al 4 Si 11 , Ni 99 Fe 1 and Ni 90 Fe 10 powders. We then increased their grain sizes by annealing. We found that a low-temperature anneal (T < 0.4 T m ) softens the elemental nanocrystalline Fe but