Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1499575 | Scripta Materialia | 2011 | 4 Pages |
Abstract
We show that the variation of flow stress with strain rate and grain size in a magnesium alloy deformed at a constant strain rate and 450 °C can be predicted by a crystal plasticity model that includes grain boundary sliding and diffusion. The model predicts the grain size dependence of the critical strain rate that will cause a transition in deformation mechanism from dislocation creep to grain boundary sliding, and yields estimates for grain boundary fluidity and diffusivity.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
David E. Cipoletti, Allan F. Bower, Paul E. Krajewski,