锻态SA508-3钢的动态再结晶预测模型  

Dynamic Recrystallization Prediction Model of As-Forged SA508-3 Steel

作　　者：李景丹 李荣斌 梁红玉 LI Jing-dan;LI Rong-bin;LIANG Hong-yu(Department of Mechanical Engineering,Taiyuan Institute of Technology,Taiyuan 030013,China;School of Materials Science,Shanghai Dianji University,Shanghai 201306,China;School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]太原工业学院机械工程系,山西太原030013 [2]上海电机学院材料学院,上海201306 [3]上海理工大学材料科学与工程学院,上海200093

出　　处：《机械工程与自动化》2023年第2期29-31,34,共4页Mechanical Engineering & Automation

基　　金：上海大件热制造工程技术研究中心项目(18DZ2253400)。

摘　　要：在Gleeble1500D热模拟试验机上开展了锻态SA508-3钢的单道次热压缩试验,研究了该材料的动态再结晶行为。试验参数为温度1000℃~1200℃、应变速率0.001 s^(-1)~1 s^(-1)。研究结果表明:SA508-3钢在高温低应变速率条件下均发生了动态再结晶现象。在此基础上,根据应力-应变曲线数据,建立了该材料的动态再结晶临界应变模型、动态再结晶百分数模型,结合压缩后试样的显微组织,建立了SA508-3钢的动态再结晶晶粒尺寸模型。The dynamic recrystallization behavior of as forged SA508-3 steel was studied by single pass hot compression tests on Gleeble1500D thermal simulator.The test parameters are temperature 1000℃~1200℃,strain rate 0.001 s^(-1)~1 s^(-1).The results show that dynamic recrystallization of SA508-3 steel occurs at high temperature and low strain rate.On the basis of this research,according to the stress-strain curve data,the critical strain model and dynamic recrystallization volume fraction model for SA508-3 steel were established.Combined with the microstructure of the compressed sample,the dynamic recrystallization grain size model of SA508-3 steel was established.

关 键 词：锻态SA508-3钢 动态再结晶 预测模型 

分 类 号：TG316[金属学及工艺—金属压力加工]