Numéro
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82
International Conference on Martensitic Transformations
Page(s) C4-455 - C4-460
DOI https://doi.org/10.1051/jphyscol:1982470
ICOMAT-82
International Conference on Martensitic Transformations

J. Phys. Colloques 43 (1982) C4-455-C4-460

DOI: 10.1051/jphyscol:1982470

STUDY OF THE INITIAL STAGES OF AGEING IN MARTENSITE

P. Wyslych1, M. Carrard2, L. Hyspecká3 et K. Mazanec1

1  Technical University Ostrava, Czechoslovakia
2  Ecole Centrale des Arts et Manufactures, Chatenay-Malabry, France
3  Research Institute, Vítkovice, Czechoslovakia


Abstract
This paper reports on an investigation of the temperature dependence of the rate sensitivity parameter [Ɗσ/Ɗlogε]T in the asquenched martensite of two Fe-Ni-C alloys. The causes of the pronounced minima observed in these dependences are analysed. Further, the conditions governing the incidence to unstable flow on the stress-strain diagrams are defined and the areas where the Snoek and the Cottrell interactions predominate are determined.