Cu-11.7%Mn-1.3%Ni合金热变形行为  

Hot deformation behavior of Cu-11.7%Mn-1.3%Ni alloy

作　　者：张真[1] 周子健 许言午 李登云 姚力 周峰 朱凯 徐韬 章江铭 梁家雄 蒲天宇 陈正坤 魏海根 ZHANG Zhen;ZHOU Zijian;XU Yanwu;LI Dengyun;YAO Li;ZHOU Feng;ZHU Kai;XU Tao;ZHANG Jiangming;LIANG Jiaxiong;PU Tianyu;CHEN Zhengkun;WEI Haigen(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;China Electric Power Research Institute,Wuhan 430074,Hubei,China;Marketing Service Center,State Grid Zhejiang Electric Co.,Ltd.,Hangzhou 310000,Zhejiang,China)

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009 [2]中国电力科学研究院有限公司,湖北武汉430074 [3]国网浙江省电力有限公司营销服务中心,浙江杭州310000

出　　处：《有色金属材料与工程》2025年第1期83-89,共7页Nonferrous Metal Materials and Engineering

基　　金：国家电网有限公司科技项目(5700-202219210A-1-1-ZN)。

摘　　要：实验采用的材料为热轧态Cu-11.7%Mn-1.3%Ni合金,热压缩变形量为60%,应变速率分别为1.000、0.100、0.010、0.001 s^(-1),变形温度为300、500、570、640、700℃。探究变形温度以及应变速率对Cu-11.7%Mn-1.3%Ni合金流变行为及维氏硬度的影响。结果表明:变形温度在500和570℃下其晶粒出现明显的压缩变形,且大部分晶粒较为破碎,可以看出组织发生了明显的变形;随着温度升高至640和700℃,其晶粒逐渐长大,大小均匀,出现了大量的退火孪晶;随着温度的升高,Cu-11.7%Mn-1.3%Ni合金的维氏硬度降低;随着应变速率的增大,Cu-111.7%Mn-1.3%Ni合金的维氏硬度增高;应变速率为1.000 s时,Cu-11.7%Mn-1.3%Ni合金的维氏硬度最高。The material used in the experiment is hot rolled Cu-11.7%Mn-1.3%Ni alloy,the hot compression deformation is 60%,the strain rates are 1.000,0.100,0.010,0.001 s^(-1),and the deformation temperatures are 300,500,570,640,700℃.The effects of deformation temperature and strain rate on the rheological behavior and Vickers hardness of Cu-11.7%Mn-1.3%Ni alloy were investigated.The results indicated that the grains exhibts noticeable compression deformation at deformation temperature of 500 and 570℃,and most of the grains are broken,which shows that the microstructure was obviously deformed.As the emperature rises to 640 and 700℃,the grains grow up gradually,the grain size is uniform,and a large number of annealing twins appear.The Vickers hardness of the Cu-11.7%Mn-1.3%Ni alloy decreases with the increase of temperature,while it increases with the increase of strain rates.When the strain rate is 1.000 s-1,the Vickers hardness of Cu-11.7%Mn-1.3%Ni alloy is the highest.

关 键 词：Cu-11.7%Mn-1.3%Ni合金 真应力–真应变曲线 本构方程 维氏硬度 显微组织 

分 类 号：TG146[一般工业技术—材料科学与工程]