摘要
以热型水平连铸制备的铜银合金为研究对象,对比研究了拉拔变形+热处理的3种组合工艺对合金电导率、力学性能,以及显微组织的影响。结果表明,在固溶和时效热处理之间施加85.9%的拉拔变形量,合金可在试验范围内获得优异的综合性能,电导率为51.91MS/m、显微硬度(HV_(0.1))为169.7、抗拉强度为541.6MPa,伸长率为15.5%。通过在固溶和时效之间施加拉拔变形,合金晶粒得到细化,且沿特定方向排布。同时,拉伸断口形貌以分布均匀的韧窝为主,且断口处较为平整。
The effects of drawing deformation and heat treatment on the conductivity,mechanical properties and microstructure of Cu-Ag alloy prepared by hot horizontal continuous casting were investigated contractively.The results show that the alloy can obtain excellent comprehensive properties within the test range by applying 85.9%drawing deformation between solution and aging heat treatment.The electrical conductivity,microhardness,tensile strength and elongation reach 51.91 MS/m,169.7 HV_(0.1),541.6 MPa and 15.5%,respectively.The alloy grains can be refined and arranged in a specific direction by applying drawing deformation between solid solution and aging treatment.Meanwhile,the tensile fracture morphology is dominated by uniformly distributed dimples,and the fracture surface is relatively flat.
作者
孔令宝
周延军
宋克兴
封存利
康军伟
曹军
李周
牛立业
郭慧稳
Kong Lingbao;Zhou Yanjun;Song Kexing;Feng Cunli;Kang Junwei;Cao Jun;Li Zhou;Niu Liye;Guo Huiwen(College of Material Science and Engineering,Henan University of Science and Technology;Provincial and Ministerial Co-construction Collaborative Innovation Center of Nonferrous New Materials and Advanced Processing Technology;Henan Senger Materials Technology Co.,Ltd.;Henan Polytechnic University;School of Materials Science and Engineering,Central South University;Chinalco Luoyang Copper Processing Co.,Ltd.)
出处
《特种铸造及有色合金》
CAS
北大核心
2020年第10期1160-1163,共4页
Special Casting & Nonferrous Alloys
基金
河南省创新引领专项基金资助项目(191110210400)
河南省高等学校重点科研项目(19A430012)
洛阳市科技重大专项基金资助项目(1901006A)
关键词
铜银合金
拉拔变形
热处理
电导率
微观组织
Cu-Ag Alloy
Drawing Deformation
Heat Treatment
Electrical Conductivity
Microstructure
