J. Phys. IV France 01 (1991) C4-199-C4-210
ALLOYS OF IRON AND REVERSIBILITY OF MARTENSITIC TRANSFORMATIONSE. HORNBOGEN and N. JOST
Institut für Weskstoffe, Ruhr-Universtität Bochum, Postfach 10, 21 48, D-4630 Bochum 1, Germany
The origin of irreversibility, reversibility, course and completeness of martensitic transformations are discussed using the following alloys of iron as examples : 1. Irreversible transformation : Fe-C, Fe-Ni-C, maraging steel 2. Reversibility in homogeneous solid solutions : Fe-Ni, Fe-Ni-C, Fe-Mn 3. Reversibility due to order or coherent particles : Fe-Pt, Fe-Ni-X, Fe-Ni-Co-Ti 4. Effects of external stress and mechanical properties on Ms 5. Effects of external magnetic fields and magnetism/antiferromagnetism in austenite. The feasibility of shape memory steels is finally discussed.
© EDP Sciences 1991