Effect of Strain on Ferrite Transformation from Super-cooled Austenite in Fe-0.5%C Alloy

Abstract

Fe-0.51wt%C alloy was cooled from 1000°C at 0.3°C/s and rolled at 710°C, at which austenite was super-cooled by 55°C. The isothermal transformation behavior at 710°C from the super-cooled and strained austenite to ferrite was investigated. It has been found that the nucleation rate of the ferrite particles increases with strain and that the rate constant for the growth of the ferrite particles remains constant regardless of the strain. The time required for the transformation and the average size of the ferrite particles decrease with increasing strain.