Ming Changand Hao Yu, Kinetics of bainite-to-austenite transformation during continuous reheating in low carbon microalloyed steel, Int. J. Miner. Metall. Mater., 20(2013), No. 5, pp. 427-432. https://doi.org/10.1007/s12613-013-0746-z
Cite this article as:
Ming Changand Hao Yu, Kinetics of bainite-to-austenite transformation during continuous reheating in low carbon microalloyed steel, Int. J. Miner. Metall. Mater., 20(2013), No. 5, pp. 427-432. https://doi.org/10.1007/s12613-013-0746-z
Ming Changand Hao Yu, Kinetics of bainite-to-austenite transformation during continuous reheating in low carbon microalloyed steel, Int. J. Miner. Metall. Mater., 20(2013), No. 5, pp. 427-432. https://doi.org/10.1007/s12613-013-0746-z
Citation:
Ming Changand Hao Yu, Kinetics of bainite-to-austenite transformation during continuous reheating in low carbon microalloyed steel, Int. J. Miner. Metall. Mater., 20(2013), No. 5, pp. 427-432. https://doi.org/10.1007/s12613-013-0746-z
A dilatometer was used to study the kinetics of bainite-to-austenite transformation in low carbon microalloyed steel with the initial microstructure of bainite during the continuous reheating process. The bainite-to-austenite transformation was observed to take place in two steps at low heating rate. The first step is the dissolution of bainite, and the second one is the remaining bainite-to-austenite transformation controlled by a dissolution process. The calculation result of the kinetics of austenite formation shows that the two steps occur by diffusion at low heating rate. However, at high heating rate the bainite-to-austenite transformation occurs in a single step, and the process is mainly dominated by shear. The growth rate of austenite reaches the maximum at about 835℃ at different heating rates and the growth rate of austenite as a function of temperature increases with the increase in heating rate.
A dilatometer was used to study the kinetics of bainite-to-austenite transformation in low carbon microalloyed steel with the initial microstructure of bainite during the continuous reheating process. The bainite-to-austenite transformation was observed to take place in two steps at low heating rate. The first step is the dissolution of bainite, and the second one is the remaining bainite-to-austenite transformation controlled by a dissolution process. The calculation result of the kinetics of austenite formation shows that the two steps occur by diffusion at low heating rate. However, at high heating rate the bainite-to-austenite transformation occurs in a single step, and the process is mainly dominated by shear. The growth rate of austenite reaches the maximum at about 835℃ at different heating rates and the growth rate of austenite as a function of temperature increases with the increase in heating rate.
下载: