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J. Phys. IV France
Volume 01, Numéro C4, Novembre 1991
EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATION AND SHAPE MEMORY PROPERTIES
Page(s) C4-89 - C4-94
DOI http://dx.doi.org/10.1051/jp4:1991413
EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATION AND SHAPE MEMORY PROPERTIES

J. Phys. IV France 01 (1991) C4-89-C4-94

DOI: 10.1051/jp4:1991413

MECHANICAL AND THERMODYNAMICAL STUDY OF A MACROSCOPICALLY COHERENT PHASE TRANSITION. CASE OF THE MARTENSITIC TRANSFORMATION

J.F. GANGHOFFER1, S. DENIS1, E. GAUTIER1, A. SIMON1, K. SIMONSSON2 and S. SJÖSTRÖM2

1  Laboratoire de Science et Génie des Matériaux Métalliques, Ecole des Mines, Parc de Saurupt, F-54042 Nancy cedex, France
2  Linköping Institute of Technology, S-58183 Linköping, Sweden


Abstract
In the general framework of a macroscopically coherent phase transition, the mechanical and thermodynamical behaviour of a two-phase volume element under structural evolution will be investigated and discussed. The identification of internal entropy production will then allow to formulate a general evolution condition for such a system and the internal stress state will appear to influence strongly the transformation behaviour, via the interface. The case of a martensitic transformation is considered. From that rigourous mechanical approach, we obtain the thermodynamical balance equation used for martensitic transformation.



© EDP Sciences 1991