阿累尼乌斯方程
材料科学
流动应力
本构方程
变形(气象学)
挤压
近似误差
应变率
压力(语言学)
合金
压缩(物理)
流量(数学)
热力学
机械
复合材料
动力学
数学
物理
经典力学
有限元法
数学分析
语言学
哲学
作者
Dongxin Niu,Chao Zhao,Daoxi Li,Zhi Wang,Zongqiang Luo,Weiwen Zhang
标识
DOI:10.3389/fmats.2020.577867
摘要
Three constitutive models, strain-compensated Arrhenius model, modified Johnson–Cook (JC) model, and modified Zerilli–Armstrong (ZA) model, were established for the hot-deformed Cu-15Ni-8Sn alloy based on hot compression tests. By introducing average absolute relative error (AARE), correlation coefficient (R), and relative error, the prediction accuracy of these three models was assessed. The results indicate that strain-compensated Arrhenius model has the highest accuracy at describing the flow stress behavior of the studied alloy, followed by modified JC model and modified ZA model. Moreover, the strain-compensated Arrhenius model established in this work has a great practicability in the hot-extrusion simulation of Cu-15Ni-8Sn alloys. This article provides a theoretical basis for optimizing hot deformation parameters in industrial production of the Cu-15Ni-8Sn alloys.
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