GH2132高温合金本构模型及大断面收缩率楔横轧成形研究  

Research on Constitutive model of GH2132 superalloy and cross wedge rolled part with large section shrinkage

作　　者：杨赞 刘家旭 师明杰 陈明[1] 陈帅峰 程明[2] 宋鸿武[2] 王瑞雪[4] YANG Zan;LIU Jiaxu;SHI Mingjie;CHEN Ming;CHEN Shuaifeng;CHENG Ming;SONG Hongwu;WANG Ruixue(School of Mechanical Engineering and Automation,University of Science and Technology Liaoning,Anshan 114051,China;Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials and Engineering,University of Science and Technology of China,Shenyang 110016,China;Analysis and Test Center,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]辽宁科技大学机械工程与自动化学院,辽宁鞍山114051 [2]中国科学院金属研究所师昌绪先进材料创新中心,沈阳110016 [3]中国科学技术大学材料科学与工程学院,沈阳110016 [4]中国科学院金属研究所分析测试中心,沈阳110016

出　　处：《兵器装备工程学报》2024年第10期107-115,共9页Journal of Ordnance Equipment Engineering

基　　金：辽宁省国际科技合作项目(2022JH2/10700006);辽宁省国际科技合作项目(2023JH2/10700014)。

摘　　要：采用Gleeble-3800热模拟试验机对GH2132高温合金进行等温恒应变速率压缩实验,获取该合金在变形温度900~1100℃、应变速率0.01~10 s^(-1)范围内的真应力-应变曲线。对所得流动应力曲线进行摩擦与绝热修正,以消除试样热变形过程的绝热温升效应以及和砧子与试样间接触摩擦作用对实验结果的影响后,建立了考虑应变补偿的Arrhenius型本构模型。误差分析结果表明,其相对平均绝对误差不超过7%,可用于该合金高温变形行为研究。分析了具有大断面收缩率特征的GH2132合金楔横轧轧件的成形过程模拟,进一步验证了所建本构模型的准确性,为GH2132高温合金楔横轧工艺开发奠定了基础。The isothermal compression experiment with constant strain rate of GH2132 superalloy was conducted by using Gleeble-3800 thermal simulator.The true stress-true strain curves of GH2132 superalloy in the deformation temperature range of 900℃to 1100℃and strain rates of 0.01 to 10 s^(-1) were achieved.After correcting for friction and adiabatic effects on the flow stress curve to eliminate the influence of adiabatic temperature rise and contact friction between the anvil and the specimen on the experimental results,an Arrhenius-type constitutive model considering incorporating strain compensation was proposed.Error analysis results indicated that the relative average absolute error was less than 7%.So,the model was suitable for investigating the hot deformation behavior of the alloy at the elevated temperature.The forming process of GH2132 alloy cross wedge rolled pieces with large section shrinkage was simulated and analyzed.The accuracy of the proposed constitutive model was verified,and such a model can be used for developing the GH2132 superalloy cross wedge rolling process.

关 键 词：GH2132高温合金 本构方程 数值模拟 楔横轧 精密成形 

分 类 号：TG339[金属学及工艺—金属压力加工]