基于热压缩试验的Cu-0.98Ni-0.24P合金本构方程及热加工图研究  

Constitutive Equation and Hot Working Diagram of Cu-0.98Ni-0.24P Alloy Based on Hot Compression Experiment

作　　者：皇保欢 张彦敏[1] 李吉宝 杨耀鹏 黄宽 单运启 赵世恒 张鸿飞 冯江[1] 张朝民 宋克兴[1,2] Huang Baohuan;Zhang Yanmin;Li Jibao;Yang Yaopeng;Huang Kuan;Shan Yunqi;Zhao Shiheng;Zhang Hongfei;Feng Jiang;Zhang Chaomin;Song Kexing(School of Materials Science and Engineering,Henan University of Science and Technology;Henan Academy of Sciences;Ningbo Bowei Alloy Materials Co.,Ltd.)

机构地区：[1]河南科技大学材料科学与工程学院 [2]河南省科学院 [3]宁波博威合金材料股份有限公司

出　　处：《特种铸造及有色合金》2023年第11期1518-1523,共6页Special Casting & Nonferrous Alloys

基　　金：宁波市创新联合体专项基金资助项目(2021H003);国家自然科学基金资助项目(52373313);河南省重大科技专项基金资助项目(221100210300)。

摘　　要：利用Gleeble-1500D热模拟机研究了Cu-0.98Ni-0.24P合金变形量为50%、温度为700~850℃,应变速率为0.01~5 s^(-1)下的热变形行为,建立了考虑温度补偿的本构方程,并对其进行了修正。结果表明,Cu-0.98Ni-0.24P合金在700、750℃下流变应力无明显峰值应力,以动态回复为主;在800、850℃下应变速率为0.01 s^(-1)时流变应力出现峰值应力,发生了完全的动态再结晶。对修正后的本构方程进行模拟计算,发现计算值与实际值吻合。根据热加工图,获取了在试验条件范围内Cu-0.98Ni-0.24P合金的最佳热加工参数:温度为700~780℃、应变速率为0.01~0.1 s^(-1)和温度为800~840℃、应变速率为0.01~5 s^(-1)。The hot deformation behavior of Cu-0.98Ni-0.24P alloy under deformation of 50%,temperature range of 700~850℃and strain rate range of 0.01~5 s^(-1)was investigated by Gleeble-1500D thermal simulation machine.The constitutive equation considering temperature compensation was established and modified.The results indicate that the flow stress of Cu-0.98Ni-0.24P alloy exhibits absence of peak stress at 700℃and 750℃,which is dominated by dynamic recovery.At 800℃and 850℃and strain rate of 0.01 s^(-1),the peak stress appears and complete dynamic recrystallization occurs.The modified constitutive equation is simulated and calculated,and the calculated is value in consistent with the actual value.According to the hot processing diagram,the optimal parameters of Cu-0.98Ni-0.24P alloy in the test range are obtained as 700~780℃,0.01~0.1 s^(-1)and 800~840℃,0.01~5 s^(-1).

关 键 词：Cu-Ni-P合金 热压缩 本构方程 热加工图 

分 类 号：TG146.11[一般工业技术—材料科学与工程]