Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7882076 | Acta Materialia | 2014 | 7 Pages |
Abstract
We conduct dislocation dynamics simulations of Fe periodic single crystals under tensile load at several high strain rates and temperatures. The simulations are connected to the atomistic scale via recently developed, temperature-dependent dislocation mobility relations. We explore strain rates from 104 to 106s-1 at temperatures of 100, 300 and 600Â K. We compute the flow stress as a function of strain rate and temperature, and find very good agreement with experimental data for Fe, suggesting that strain hardening is the dominant materials response mechanism in the range of conditions explored here.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Meijie Tang, Jaime Marian,