ZHU Lijuan
,
WU Di
,
ZHAO Xianming
钢铁研究学报(英文版)
Transformation behavior in low carbon SiMn TRIP steel was investigated by means of microstructural observation and computer modelling. A transformation model in which transformation is controlled by carbon diffusion was suggested, which well described the volume fractional change of ferrite, pearlite, and bainite during continuous cooling. The influence of Si content and austenite grain size was thoroughly investigated. The calculated results indicated that Si retards pearlite transformation, accelerates polygonal ferrite transformation, refines the austenite grain, and increases the ferrite transformation rate.
关键词:
TRIP steel;transformation;incubation time;ferrite;bainite;pearlite
ZHU Lijuan
,
WU Di
,
ZHAO Xianming
钢铁研究学报(英文版)
By means of hot compression single and double hit experiments, the kinetics of dynamic and static recrystallization in hotrolled SiMn TRIP steel was studied, and the emphasis was put on the influence of high silicon content. The results show that the calculated parameters are consistent with the experimental ones, and addition of silicon retards both dynamic and static recrystallization as well as increases the flow stress of austenite, and the nonrecrystallization zone can be enlarged by increasing the silicon contents.
关键词:
dynamic recrystallization;static recrystallization;mathematical model;TRIP steel;silicon
