Effects of Fe content on microstructure and properties of Cu−Fe alloy  

Fe含量对Cu−Fe合金组织与性能的影响

作　　者：Meng WANG Qian-ru YANG Yan-bin JIANG Zhou LI Zhu XIAO Shen GONG Yong-ru WANG Chuang-li GUO Hai-gen WEI 王檬;杨倩如;姜雁斌;李周;肖柱;龚深;王永如;郭创立;魏海根(中南大学材料科学与工程学院,长沙410083;中南大学有色金属材料科学与工程教育部重点实验室,长沙410083;中南大学粉末冶金国家重点实验室,长沙410083;宁波金田铜业(集团)股份有限公司,宁波315031;西安斯瑞先进铜合金科技有限公司,西安710077;江西理工大学材料冶金化学学部,赣州341000)

机构地区：[1]School of Materials Science and Engineering,Central South University,Changsha 410083,China [2]Key Laboratory of Non-ferrous Metal Materials Science and Engineering,Ministry of Education,Central South University,Changsha 410083,China [3]State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China [4]Ningbo Jintian Copper(Group)Co.,Ltd.,Ningbo 315031,China [5]Sirui Advanced Copper Alloy Co.,Ltd.,Xi’an 710077,China [6]Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China

出　　处：《Transactions of Nonferrous Metals Society of China》2021年第10期3039-3049,共11页中国有色金属学报（英文版）

基　　金：financial supports from the National Natural Science Foundation of China (No.51974375);Key Project of "Technology Innovation 2025",Ningbo,China(No.2018B10030);Technology Research Program of Shenzhen,China (No.JSGG20170824162647398);Project of State Key Laboratory of Powder Metallurgy,Central South University,China;Young People Fund of Jiangxi province,China (No.2018BAB216005.

摘　　要：Cu−Fe alloys with different Fe contents were prepared by vacuum hot pressing.After hot rolling and aging treatment,the effects of Fe content on microstructure,mechanical properties and electrical conductivity of Cu−Fe alloys were studied.The results show that,when w(Fe)<60%,the dynamic recrystallization extent of both Cu phase and Fe phase increases.When w(Fe)≥60%,Cu phase is uniformly distributed into the Fe phase and the deformation of alloy is more uniform.With the increase of the Fe content,the tensile strength of Cu−5wt.%Fe alloy increases from 305 MPa to 736 MPa of Cu−70wt.%Fe alloy,the elongation decreases from 23%to 17%and the electrical conductivity decreases from 31%IACS to 19%IACS.These results provide a guidance for the composition and processing design of Cu−Fe alloys.采用真空热压法制备不同Fe含量的Cu−Fe合金坯料。研究Fe含量对热轧和时效处理Cu−Fe合金组织、力学性能和导电率的影响规律和机理。结果表明,当Fe含量<60%(质量分数)时,Cu相和Fe相动态再结晶程度增大;当Fe含量≥60%时,Cu相颗粒均匀分布在Fe相中,合金变形较均匀。随着Fe含量的增加,抗拉强度从Cu−5%Fe合金的305 MPa增加至Cu−70%Fe合金的736 MPa,其断后伸长率则从23%下降至17%,导电率从31%IACS下降至19%IACS。该结果对Cu−Fe合金的成分和加工工艺设计具有指导意义。

关 键 词：Cu−Fe alloy microstructure properties powder metallurgy 

分 类 号：TG146.11[一般工业技术—材料科学与工程]