A material model is proposed which captures microstructural changes in two phase materials with phase transitions. Using a homogenization technique, macroscopic material properties are derived. A set of microstructural variables is chosen to describe the micro geometry. Approximating the second phase as an ellipsoidal inclusion with eigenstrain and interfacial energy the attempt is made to model the micro mechanics rather accurately. Results are shown for parameters that mimic Nickel base alloys. [References: 3]
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