J. Phys. IV France 112 (2003) 115
DOI: 10.1051/jp4:2003846

Modeling of martensitic transformation in adaptive composites

J. Slutsker¹, A. Artemev² and A.L. Roitburd<sup>3

1</sup>  Materials Science and Engineering Laboratory, Metallurgy Division, National lnstitute of Standards and Technology, Gaithersburg, MA 20899, U.S.A.
²  Department of Mechanical and Aerospace Engineering, Carleton University, 1125 Colonel By Dr., Ottawa, ON, Canada K1S 5B6
³  Department of Materials and Nuclear Engineering, University of Maryland, College Park, Maryland 20742, U.S.A.

Abstract
The formation of elastic domains in transforming constrained films is a mechanism of relaxation of internal stresses caused by the misfit between a film and a substrate. The formation and evolution of polydomain microstructure as a result of the cubic-tetragonal transformation in a constrained layer are investigated by phasefield simulation. It has been shown that the three-domain hierarchical structure can be formed in the epitaxial films. With changing a fraction of out-of-plane domain 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 the phase-field simulation are compared with available experimental data.

© EDP Sciences 2003