Premium
‘Flash’ Annealing in a Cold‐Rolled Low Carbon Steel Alloyed With Cr, Mn, Mo, and Nb: Part I ‐ Continuous Phase Transformations
Author(s) -
Castro Cerda Felipe Manuel,
Vercruysse Florian,
Goulas Constantinos,
Schulz Bernd,
Petrov Roumen H.
Publication year - 2019
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201800098
Subject(s) - austenite , materials science , carbide , annealing (glass) , metallurgy , microstructure , quenching (fluorescence) , kinetics , physics , quantum mechanics , fluorescence
The aim of the present work is to study the microstructure evolution of a cold‐rolled low carbon steel alloyed with Cr, Mn, Mo, and Nb during continuous heating. The formation of austenite and its further transformation is examined by means of peak annealing experiments at three different heating rates, followed by quenching. The effect of carbide‐forming alloying elements in the kinetics of austenite formation and decomposition is discussed with the aim of DICTRA calculations. Electron Probe Micro Analysis allows the detection of small compositional fluctuations within the microstructure, which are responsible for local changes in the mechanism of austenite formation. It is experimentally demonstrated that the temperature dependence of the austenite fraction is relatively insensitive to the heating rate. It is suggested that carbide‐forming alloying elements slow down the kinetics of austenite formation.