Modeling of γ→α Transformation Temperature Ar_3 for High-Nb Pipeline Steel During Cooling Process  

作　　者：LIU Yun-fei PENG Yan LIU Hong-min ZHANG Jian 

机构地区：[1]Engineering Research Center of Rolling Equipment and Complete Technology of Ministry of Education, Yanshan University, Qinhuangdao 066004, Hebei, China [2]State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China

出　　处：《Journal of Iron and Steel Research International》2011年第7期59-63,共5页

基　　金：Item Sponsored by Fok Ying Tung Education Foundation of China(101048);Provincial Natural Science Foundation of Hebei Province of China(E2008000835)

摘　　要：According to the research on the deformation resistance and the ferrite transformation behavior of X80 pipeline steel by using Gleeble 3500 thermal simulator, a mathematical model of the α-phase start transformation temperature for high-Nb pipeline steel was established, based on the transformation kinetics and thermodynamics. The influence of deformation and cooling rate as well as Nb content on the α-phase starting temperature was thor- oughly investigated. The results given by the model were in good agreement with the experimental results, which showed that the model could predict the α-phase starting temperature for high Nb pipeline steel during cooling process.According to the research on the deformation resistance and the ferrite transformation behavior of X80 pipeline steel by using Gleeble 3500 thermal simulator, a mathematical model of the α-phase start transformation temperature for high-Nb pipeline steel was established, based on the transformation kinetics and thermodynamics. The influence of deformation and cooling rate as well as Nb content on the α-phase starting temperature was thor- oughly investigated. The results given by the model were in good agreement with the experimental results, which showed that the model could predict the α-phase starting temperature for high Nb pipeline steel during cooling process.

关 键 词：high-Nb pipeline steel hot deformation deformation resistance cooling rate ferrite transformation temperature 

分 类 号：TG142.33[一般工业技术—材料科学与工程] TE973[金属学及工艺—金属材料]