| Numéro |
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82International Conference on Martensitic Transformations |
|
|---|---|---|
| Page(s) | C4-121 - C4-126 | |
| DOI | https://doi.org/10.1051/jphyscol:1982411 | |
ICOMAT-82
International Conference on Martensitic Transformations
J. Phys. Colloques 43 (1982) C4-121-C4-126
DOI: 10.1051/jphyscol:1982411
1 Department of Metallurgy & Materials Science, Imperial College, London SW7 2BP, England
2 US Steel Research Labs., Monroeville, Pa 15146, USA
International Conference on Martensitic Transformations
J. Phys. Colloques 43 (1982) C4-121-C4-126
DOI: 10.1051/jphyscol:1982411
MARTENSITE FORMATION AT GRAIN BOUNDARIES IN SENSITISED 304 STAINLESS STEEL
E.P. Butler1 et M.G. Burke1, 21 Department of Metallurgy & Materials Science, Imperial College, London SW7 2BP, England
2 US Steel Research Labs., Monroeville, Pa 15146, USA
Abstract
Observations by cold stage microscopy of martensite formation at Cr-depleted grain boundaries in a type 304 stainless steel are presented. Compositional considerations alone are not sufficient to explain transformation initiation, which is shown to occur at slip band/boundary intersection points and along grain boundaries whose plane orientation matches that of the martensite habit plane. At these heterogeneous sites it is considered that strain energy and interfacial energy gains respectively can assist in the evolution of a critical nucleus.