基于316L不锈钢/高锰钢复合板热变形行为建立的本构方程  

Constitutive equations based on hot deformation behaviour of 316L stainless steel/high-manganese steel composite plates

作　　者：苏官正 李华英[1] 宋耀辉 赵明 赵广辉[2] 乔进朝 SU Guan-zheng;LI Hua-ying;SONG Yao-hui;ZHAO Ming;ZHAO Guang-hui;QIAO Jin-chao(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Engineering Research Center of Heavy Machinery Ministry of Education,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030024 [2]太原科技大学重型机械教育部工程研究中心,山西太原030024

出　　处：《塑性工程学报》2025年第3期229-238,共10页Journal of Plasticity Engineering

基　　金：山西省重点研发计划项目(202202050201015);山西省科技成果引导专项项目(202204021301057);山西省科研实践创新类项目(2023SJ241)。

摘　　要：利用Gleeble-3800热模拟试验机,在950~1150℃的变形温度和0.01、0.1、1 s^(-1)的应变速率条件下,对316L不锈钢/高锰钢复合板进行单道次高温压缩复合实验,绘制了真应力-真应变曲线,同时构建了流变应力本构方程模型,探究了应力、应变速率和热变形温度等因素对材料热变形能力的影响。结果表明,构建的本构方程模型精度很高;在热压缩过程中当温度一定时,316L不锈钢/高锰钢的流动应力值随着应变速率的升高而增大;当应变速率一定时,流动应力值随温度的升高而减小;通过对显微组织的分析,获得了316L不锈钢/高锰钢最优的热加工窗口为:变形温度1150℃,应变速率为1 s^(-1)。The single-pass high-temperature compression composite experiments of 316L strainless steel/high-manganese steel composite plates were carried out using Gleeble-3800 thermal simulator at deformation temperatures of 950-1150℃and strain rates of 0.01,0.1 and 1 s^(-1),and the true stress-true strain curves were plotted,and the model of the flow stress constitutive equations was constructed at the same time.The effects of stress,strain rate and hot deformation temperature on the hot deformation capacity of the materials were in-vestigated.The results show that the accuracy of the constructed consititutive equation model is very high.The flow stress value of 316L stainless steel/high-manganese steel increases with the increase of strain rate when the temperature is certain.When the strain rate is fixed,the flow stress decreases with the increase of the temperature.By analyzing the microstructure,the optimum hot working window for 316L stainless steel/high-manganese steel is obtained as:deformation temperature of 1150℃and strain rate of 1 s^(-1).

关 键 词：316L不锈钢/高锰钢 本构方程 热变形行为 

分 类 号：TG142.1[一般工业技术—材料科学与工程]