HPb59-1铜合金高温流变行为的本构模型  

Constitutive model of high-temperature flow behavior of HPb59-1 copper alloy

作　　者：孙红磊[1] 殷璟[2] 马瑞[1] 金鑫 SUN Hong-lei;YIN Jing;MA Rui;JIN Xin(School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;Hangzhouwan Automobile Institute,Ningbo Institute of Technology,Ningbo 315211,China;Department of Applied Design,Ningbo Technician College,Ningbo 315032,China)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]宁波工程学院杭州湾汽车学院,浙江宁波315211 [3]宁波技师学院应用设计系,浙江宁波315032

出　　处：《塑性工程学报》2022年第7期157-164,共8页Journal of Plasticity Engineering

基　　金：浙江省自然科学基金资助项目(LQ19E040002)。

摘　　要：利用Gleeble-3800热模拟试验机,通过等温热压缩模拟实验研究了HPb59-1铜合金在640~730℃、应变速率0.1~10 s^(-1)范围内的高温流变行为,并在经典Arrhenius本构模型的基础上,考虑了应变对材料本构关系的影响,建立了应变补偿Arrhenius本构模型,以表征真实应变、温度和应变速率对流变应力的影响规律。通过对比材料本构模型的理论预测结果和实验数据,获得了流变应力的相关性系数r=0.9983,平均相对误差的绝对值e_(ARRE)=2.6517%,说明所建立的HPb59-1铜合金材料本构方程具有较高的理论预测精度,该本构模型可用于HPb59-1铜合金热锻成形工艺的有限元模拟研究。The high-temperature flow behaviors of HPb59-1 copper alloy at 640-730℃and the strain rates of 0.1-10 s^(-1) were investigated by isothermal hot compression simulation experiments on the Gleeble-3800 thermo-mechanical simulator testing machine.Based on the classical Arrhenius constitutive model,considering the influence of strain on constitutive relationship of material,the Arrhenius constitutive model with strain compensation was established to characterize the effect law of real strain,temperature and strain rate on flow stress.The correlation coefficient r=0.9983 and the absolute value of the mean relative error e_(ARRE)=2.6517%are obtained by comparing the theoretical prediction results of the material constitutive model with the experimental data,which indicates that the established material constitutive equation of HPb59-1 copper alloy has high theoretical prediction accuracy.The constitutive model can be used for the finite element simulation of hot forging process of HPb59-1 copper alloy.

关 键 词：HPb59-1铜合金 Arrhenius本构模型 ZENER-HOLLOMON参数 热锻成形 

分 类 号：TG314[金属学及工艺—金属压力加工]