Authors: Xiaoya Yang An He Congfeng Wu Shilei Li Hailong Zhang Xitao Wang
Publish Date: 2015/09/09
Volume: 24, Issue: 11, Pages: 4346-4357
Abstract
Static recrystallization SRX behavior of a nitrogenalloyed ultralow carbon austenitic stainless steel was studied on a Gleeble1500D thermalsimulator by twostep hot compression tests Deformation temperatures of 11731473 K deformation strains of 00510105 strain rates of 0011 s−1 and interstep times of 1100 s were selected as the deformation conditions to investigate the effects of deformation parameters on SRX behavior Besides the influences of initial grain size on SRX behavior were studied The results show that deformation temperature and strain have greater influences on SRX behavior than strain rate and initial grain size Based on true stresstrue strain data obtained from the experiments SRX kinetics equation was determined In addition the established SRX kinetics equation was introduced into finite element simulation software DEFORM3D to perform the twostep compression deformation Furthermore SRX kinetics equation was modified for improving the accuracy of finite element simulation and the modified SRX kinetics equation was verified
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