δ相时效态GH4169合金Zerilli-Armstrong本构模型及其参数反求方法
Zerilli-Armstrong constitutive model of δ phase-aged GH4169 alloy and its parameters inversion method
苏志毅 1陈学文 1杨圳 1孙佳伟 1赵文侠 2周正 1毛怡然1
作者信息
- 1. 河南科技大学 材料科学与工程学院,河南 洛阳 471023
- 2. 中国航发北京航空材料研究院,北京 100095
- 折叠
摘要
在Gleeble-1500D型热模拟试验机上进行了δ相时效态GH4169 合金的高温压缩试验.试验温度为 950～1040℃、应变速率为0.005～1 s-1.为了能建立准确描述该合金流动行为的本构模型,考虑应变对Zerilli-Armstrong本构模型材料参数的影响,提出并采用了一种基于多岛遗传算法的参数反求方法建立了该材料考虑应变补偿的Zerilli-Armstrong本构模型.借助相关系数、平均绝对相对误差等标准统计参数定量评估了该本构模型预测的准确性.结果表明:考虑应变补偿的Zerilli-Armstrong本构模型具有较高的预测准确性,其相关系数和平均绝对相对误差分别为 0.996 和 3.189%.
Abstract
The high-temperature compression experiments of δ-phase aged GH4169 alloy was carried out on Gleeble-1500D thermal simu-lation testing machine.The experiments temperature was 950-1040℃and the strain rate was 0.005-1 s-1.To establish the constitutive model that can accurately describe the flow behavior of the alloy,the influence of strain on the material parameters of the Zerilli-Armstrong constitutive model was considered.A parameter inversion method based on the multi-island genetic algorithm was proposed and adopted to establish the Zerilli-Armstrong constitutive model of the material considering strain compensation.With the help of standard statistical pa-rameters such as correlation coefficient and average absolute relative error,the prediction accuracy of the constitutive model was quantita-tively evaluated.The results show that the Zerilli-Armstrong constitutive model considering strain compensation has high prediction accura-cy,and its correlation coefficient and average absolute relative error are 0.996 and 3.189%,respectively.
关键词
δ相时效态GH4169合金/Zerilli-Armstrong本构模型/反求方法/应变补偿Key words
δ phase-aged GH4169 alloy/Zerilli-Armstrong constitutive model/inversion method/strain compensation引用本文复制引用
基金项目
国家重点研发计划(2020YFB2008400)
国家自然科学基金资助项目(51575162)
出版年
2024
NETL
NSTL
万方数据