摘要
采用Gleeble-2000D热模拟试验机对F40MnVS非调质钢进行了热模拟压缩试验,分析了该钢在850~1 050℃和0.01~10s^(-1)条件下的热模拟压缩变形特征。同时,根据Prasad提出的动态材料模型(DMM)并结合有限元模拟,建立了适用于F40MnVS非调质钢φ156mm规格棒材的热加工图。研究结果表明,在低应变速率(0.01~0.1s^(-1))下,材料呈现典型的动态再结晶特征;在高应变速率(1~10s^(-1))下,材料发生动态回复;由所建立的热加工图确定了F40MnVS非调质钢的最佳的热变形工艺,即变形温度900~950℃,应变速率0.03~0.1s^(-1)。热加工图为F40MnVS非调质钢大规格棒材的加工性能分析和工艺优化提供了参考依据。
The Gleeble-2000Dthermal simulation testing machine was used to conduct a thermal simulation compression test on F40MnVS non-quenched and tempered steel.The thermal simulation compression deformation characteristics of the F40MnVSsteel at 850-1 050℃and 0.01-10s^(-1) were analyzed.At the same time,based on the dynamic material model(DMM)proposed by Prasad and combined with finite element simulation,the thermal processing map suitable for F40MnVS non-quenched and tempered steel φ156mm bar was established.The research results show that at low strain rates(0.01-0.1s^(-1)),the material exhibits typical dynamic recrystallization characteristics;at high strain rates(1-10s^(-1)),the material undergoes dynamic recovery;the optimal thermal deformation process of F40MnVS non-quenched and tempered steel is determined by thermal processing map,that is,the deformation temperature is 900-950℃and the strain rate is 0.03-0.1s^(-1).The thermal processing map provides a reference for the processing performance analysis and process optimization of F40MnVS large gauge bar.
作者
伍厚玲
侯清宇
黄贞益
光剑锋
马玉康
马啸宇
WU Houling;HOU Qingyu;HUANG Zhengyi;GUANG Jianfeng;MA Yukang;MA Xiaoyu(School of Metallurgical Engineering,Anhui University of Technology,Maanshan 243000,China)
出处
《轧钢》
2021年第2期37-44,共8页
Steel Rolling
基金
国家自然科学基金资助项目(51674004)。
关键词
F40MnVS非调质钢
大规格棒材
热加工图
热变形
工艺优化
F40MnVS non-quenched and tempered steel
large gauge bar
the thermal processing map
thermal deformation
process optimization
