MARTENSITIC-TRANSFORMATION PLASTICITY SIMULATIONS BY FINITE-ELEMENTS

The mechanical behaviour associated to the martensitic transformation has been modelled using a 2D FE description. The martensite variants a re constituted of different elements of the mesh and four different va riants are allowed to transform in the grain. The transformation progr ess is prescribed using a thermodynamical criterion based on the maxim al work associated to the variant formation. Transformation plasticity deformation and plates orientation patterns are obtained for three st ress levels. These results are discussed in regard to the model used a nd the physical parameters introduced in the model.