Prediction model for austenite grains growth during reheating process in Ti micro-alloyed cast steel by coupling precipitates dissolution and coarsening behavior

作     者：Tao Liu Mu-jun Long Wen-jie He Deng-fu Chen Zhi-hua Dong Xian-guang Zhang Hua-mei Duan 

作者机构：State Key Laboratory of Coal Mine Disaster Dynamics and ControlCollege of Materials Science and EngineeringChongqing UniversityChongqing 400030China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New MaterialsChongqing UniversityChongqing 400030China Applied Materials Physics.Department of Materials Science and EngineeringKTH-Royal Institute of TechnologyStockholm 10044Sweden Institute for Materials ResearchTohoku UniversitySendai 980-8577Japan 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2019年第26卷第2期

页      面：162-172页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 

基　　金：National Natural Science Foundation of China(Grant Nos.51504048,51874060,51874059 and 51611130062) The authors would like to acknowledge the members of Laboratory of Metallurgy and Materials,Chongqing University,for the support of this work 

主　　题：Austenite grains growth Reheating process Precipitate dissolution Precipitate coarsening Prediction model 

摘      要：A combined model to predict austenite grains growth of titanium micro-alloyed as-cast steel during reheating process was *** model invoIves the behaviors of austenite grains growth in continuous heating process and isothermal soaking process,and the variation of boundary pinning efficiency caused by the dissolution and coarsening kinetics of sec on d-phase particles was also con sidered into the ***,the experimental verificatio ns were performed to examine the prediction power of the *** results revealed that the mean austenite grains size increased with the increase in reheating temperature and soaking time,and the coarsening temperature of austenite grains growth was 1423 K under the current titanium *** addition,the reliability of the predicted results in continuous heating process was validated by continuous heating ***,an optimal regression expression of austenite grains growth in isothermal soaking process was obtained based on the experimental *** compared results indicated that the combined model in conjunction with precipitates dissolution and coarsening kinetics had good reliability and accuracy to predict the austenite grains growth of titanium micro-alloyed casting steel during reheating process.