The effect of compressive deformation of austenite on the bainitic ferrite transformation in Fe-Mn-Si-C steels
Journal
Materials Science and Engineering A
Journal Volume
278
Journal Issue
1-2
Pages
278-291
Date Issued
2000
Author(s)
Abstract
The influence of different amounts (10, 20, and 40%) of compressive deformation of austenite on the subsequent isothermal transformation of bainite has been investigated in Fe-Mn-Si-C alloy steels. The overall transformation kinetics became slower and the final attained amount of bainite decreased in deformed austenite after the isothermal transformation was completed. The prior deformation of austenite had a strong impact on the bainitic transformation, because it created defects which hinder the growth of bainite and resulted in finer micro structure. If the recovery of deformed austenite occurred, the effect of mechanical stabilization of austenite would be mitigated. These results emphasized that the accumulated strain in austenite matrix retarded significantly the growth of bainite. © 2000 Published by Elsevier Science S.A. All rights reserved.
Type
journal article