Title
A simple, mixtures-based model for the grain size dependence of strength in nanophase metals
Document Type
Article
Publication Date
1-1-1995
Abstract
A model is presented for the strength of nanophase metals. The model assumes that polycrystalline metals consist of two phases: the "bulk" intragranular regions, and the "grain boundaries". The boundary phase is treated as a glassy, but not highly rate-dependent material with a constant strength equal to that of the amorphous metal. The crystalline phase is assumed to follow a Hall-Petch equation for the grain-size dependence of strength. Treating the material as a composite, with a rule of mixtures approach, predicts a change in the Hall-Petch slope at small grain sizes, as has been observed. Grain size softening is predicted, but not until sizes below 5 nm. The model is compared to data in the literature. © 1995.
Publication Title
Nanostructured Materials
Recommended Citation
Carsley, J.,
Ning, J.,
Milligan, W.,
Hackney, S.,
&
Aifantis, E.
(1995).
A simple, mixtures-based model for the grain size dependence of strength in nanophase metals.
Nanostructured Materials,
5(4), 441-448.
http://doi.org/10.1016/0965-9773(95)00257-F
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5810