Hot Ductility of High Carbon Steel Produced by CSP
Hot ductility of a high carbon steel 65Mn produced by CSP (Compact Strip Production) was tested on Gleeble-3500 simulator. Results show that the great reduction of hot ductility occurred between 700°C900°C. This is resulted from the formation of ferrite allotriomorphs along prior austenite grain boundaries and aluminum nitride precipitation along and near austenite grain boundaries. In order to prevent from surface cracking on thin slabs, it is suggested that the unbending temperature should be controlled above 950°C.
Jian-Feng Nie and Allan Morton
G. Huang et al., "Hot Ductility of High Carbon Steel Produced by CSP", Materials Science Forum, Vols. 654-656, pp. 234-237, 2010