Abstract

Using the basic principles of continuum thermodynamics the notion of the thermodynamical driving force for coherent phase transformations is introduced. The new representations of thermodynamical driving force are derived. It is shown that thermodynamical driving force reaches an extremum at any dynamically admissible phase amplitude, provided that two phase solids exhibit instantaneous elasticity. The possible interpretation of macroscopic thermodynamical driving force for martensitic transformation is presented.

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