On the decomposition of Martensite during bake hardening of thermomechanically processed transformation-induced plasticity steels

Authors

E V. Pereloma, University of WollongongFollow
M.K Miller, Oak Ridge National Laboratory
Ilana B. Timokhina, Deakin UniversityFollow

RIS ID

24965

Publication Details

Pereloma, E. V., Miller, M. & Timokhina, I. B. (2008). On the decomposition of Martensite during bake hardening of thermomechanically processed transformation-induced plasticity steels. Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, 39 (13), 3210-3216.

Abstract

Thermomechanically processed (TMP) CMnSi transformation-induced plasticity (TRIP) steels with and without additions of Nb, Mo, or Al were subjected to prestraining and bake hardening. Atom probe tomography (APT) revealed the presence of fine C-rich clusters in the martensite of all studied steels after the thermomechanical processing. After bake hardening, the formation of iron carbides, containing from 25 to 90 at. pct C, was observed. The evolution of iron carbide compositions was independent of steel composition and was a function of carbide size.