清华大学学报（英文版）
清華大學學報（英文版）
청화대학학보（영문판）
TSINGHUA SCIENCE AND TECHNOLOGY
2004年
6期
622-627
,共6页
沈丙振%方能炜%沈厚发%柳百成
瀋丙振%方能煒%瀋厚髮%柳百成
침병진%방능위%침후발%류백성
microstructure%static recrystallization%metadynamic recrystallization%low carbon steel
Static and metadynamic recrystallization models were developed with the coefficients determined by multiple nonlinear regression analyses to describe microstructure evolution in low carbon steels. The effects of initial grain size, deformation temperature, strain, and strain rate on the austenitic recrystallized volume fraction and grain size were studied using a Gleeble machine. The results show that deformation reduces the grain size when the recrystallized volume fraction is large. The static recrystallized volume fraction increases with increasing deformation temperature, strain, and strain rate, and decreasing initial grain size. The grain size during metadynamic recrystallization is independent of the deformation strain and the initial grain size. The recrystallized volume fraction, the grain size, and the grown grain size calculated by the correlations are consistent with the measured values.
