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Published January 2015 | public
Journal Article

A model coupling plasticity and phase transformation with application to dynamic shear deformation of iron


A simple model that brings together well-established thermo-mechanical models of plasticity with those of martensitic phase transformation into a single thermodynamic framework is proposed. The presentation is in one space dimension, but the framework is general so that the model may be extended to higher dimensions. The model is used to study recent experiments on the α⇔∊ martensitic phase transformation of pure iron under dynamic, shear-dominant loading conditions. It is shown that the model fitted to established thermodynamic data and selected experiments is able to reproduce the experimental observations in a wide range of loading rates ranging from quasistatic to 10^4 s^−1 as well as a wide range of phenomena ranging including overall rate hardening and thermal softening. In doing so, the model also provides new insight into the α⇔∊α⇔∊ phase transformation in iron.

Additional Information

© 2014 Elsevier Ltd. Received 31 October 2013; Received in revised form 8 April 2014; Available online 4 May 2014. The work draws from the doctoral thesis of Amir Sadjadpour at the California Institute of Technology. The authors gratefully acknowledge the financial support of the U.S. Department of Energy (GR: Grant No. DE-NA0001805) U.S. Army Research Laboratory (GR & KB: Cooperative Agreement Number W911NF-12-2-0022).

Additional details

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