Phase Field Modeling of Elastic Domain Structures in Constrained Layers

Julia Slutsker

Materials Science and Engineering Laboratory, Metallurgy Division

NIST

The formation and evolution of polydomain microstructure under external stress in the constrained layer are investigated by phase-field simulation and analytically using homogeneous approximation.  As a result of simulation it has been shown that the three-domain hierarchical structure can be formed in the constrained layers.  Under external stress there are two types of morphological transitions: from the three-domain structure to the two-domain one and from the hierarchical three-domain structure to the cellular three-domain structure.  The results of phase-field simulation are compared with conclusions of homogenous theory and with available experimental data.


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