高强高导Cu-Cr-X合金退火态组织性能  

Microstructure and properties of annealed high strength and high conductivity Cu-Cr-X alloy

作　　者：康军伟 周延军[1,2] 宋克兴 牛立业[3] 杨婧钊 孔令宝 郭慧稳 杜宜博 KANG Jun-wei;ZHOU Yan-jun;SONG Ke-xing;NIU Li-ye;YANG Jing-zhao;KONG Ling-bao;GUO Hui-wen;DU Yi-bo(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Provincial and Ministerial Co-construction Collaborative Innovation Center of New Materials and Advanced Processing Technology of Nonferrous Metals,Luoyang 471023,China;Chinaclo Luoyang Copper Processing Co Ltd,Luoyang 471023,China;School of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]有色金属新材料与先进加工技术省部共建协同创新中心,河南洛阳471023 [3]中铝洛阳铜加工有限公司,河南洛阳471023 [4]西北工业大学机电学院,陕西西安710072

出　　处：《材料热处理学报》2020年第6期62-68,共7页Transactions of Materials and Heat Treatment

基　　金：河南省创新引领专项(191110210400);河南省高等学校重点科研项目(19A430012);河南省杰出人才创新基金(182101510003)。

摘　　要：采用扫描电镜、透射电镜、涡流金属电导仪及显微硬度计等研究了退火温度对Cu-Cr-X合金带材硬度、导电率、抗拉强度以及微观组织的影响规律。结果表明:原始冷轧态合金带材经过370℃退火处理后,在保持高的导电率情况下,合金带材硬度由152.6 HV0.1升高到164.5 HV0.1、强度由532 MPa升高到544 MPa。随着退火温度升高到420℃,合金导电率变化不大,但强度和硬度明显降低,其中强度下降到519 MPa,硬度下降到154.8 HV0.1。微观组织分析表明:经过370℃退火后合金中出现了亚晶组织,晶界增多,增加对位错阻碍作用,有利于力学性能的提升。Effects of annealing temperature on hardness,conductivity,tensile strength and microstructure of Cu-Cr-X alloy strip were studied by means of scanning electron microscopy,transmission electron microscopy,eddy current metal conductivity meter and microhardness meter.The results show that the hardness of the original cold-rolled alloy strip increases from 152.6 HV0.1 to 164.5 HV0.1 after annealing at 370℃,the strength increases from 532 MPa to 544 MPa,and the conductivity remains high value.With the increase of annealing temperature to 420℃,the conductivity of the alloy does not change much,but the strength and hardness decrease obviously,in which the strength decreases to 519 MPa,the hardness decreases to 154.8 HV0.1.The microstructure analysis shows that the sub-crystalline structure appears in the alloy after annealing at 370℃,and the grain boundaries increase,which increases the hindrance to dislocation,which is beneficial to the improvement of the mechanical properties of the alloy.

关 键 词：高强高导 Cu-Cr-X合金 退火 性能 微观组织 

分 类 号：TG146.1[一般工业技术—材料科学与工程]