姜凯旋,周延军,宋克兴,杨冉,郁炎,柳亚辉,张彦敏,陈纪东,黄宽,刘东东,余勃

• 1:河南科技大学材料科学与工程学院
• 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
• 3:河南省有色金属材料科学与加工技术重点实验室
• 4:河南省科学院

摘要(Abstract)：

首先对挤压态Cu-15Ni-8Sn合金进行不同温度固溶处理1 h,优化出合适的固溶温度，在此基础上，对合金进行了400℃时效2 h的处理，采用光学显微镜、扫描电镜、拉伸试验及洛氏硬度计等分析了挤压态、固溶态和时效态合金的微观组织、断口形貌、抗拉强度和硬度。结果表明：挤压态合金晶界和晶内分布大量富Sn相，合金硬度为81.5 HRB,抗拉强度为597 MPa;随着固溶温度的升高，合金晶粒尺寸开始长大，第二相颗粒逐渐固溶入基体中，当固溶温度为840℃时，第二相颗粒基本完全固溶到基体中，合金晶粒尺寸为75～180μm,当固溶温度达到860℃时，晶粒出现过烧，表明合金的最佳固溶温度为840℃,此时合金的硬度为55.6 HRB,抗拉强度为396.5 MPa;时效后合金的力学性能得到显著提升：硬度为105.4 HRB,抗拉强度为839.8 MPa,与经840℃固溶处理的合金相比，分别提高了89.6%和112%。

关键词(KeyWords)： Cu-15Ni-8Sn合金;固溶;时效;强度;微观组织

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2021YFB3700700);; 国家自然科学基金(52173297,52071133);; 中原学者工作站资助项目(214400510028);; 河南省重点研发与推广专项(212102210441);; 河南省科学院科研开发专项(220910009)

作者(Author): 姜凯旋,周延军,宋克兴,杨冉,郁炎,柳亚辉,张彦敏,陈纪东,黄宽,刘东东,余勃

DOI: 10.13289/j.issn.1009-6264.2022-0548

参考文献(References)：

• [1] 揭晓，钟强强，李钊，等.Sn添加对Cu-3Ni-0.75Si-0.1Mg合金高温抗软化性能的影响及其机理[J].材料热处理学报，2021,42(5):32-42.JIE Xiao,ZHONG Qiang-qiang,LI Zhao,et al.Effect of Sn addition on high temperature softening resistance of Cu-3Ni-0.75Si-0.1Mg alloy and its mechanism[J].Transactions of Materials and Heat Treatment,2021,42(5):32-42.
• [2] 吴语，杨胜利.高弹性合金Cu-Ni-Sn的研究与发展[J].上海有色金属，2014,35(1):38-44.WU Yu,YANG Sheng-li.Research and development prospect of high-elastic Cu-Ni-Sn alloy[J].Shanghai Nonferrous Metals,2014,35(1):38-44.
• [3] 刘洋，罗远辉，王力军.Cu-15Ni-8Sn弹性合金的研究及发展趋势[J].金属功能材料，2013,20(2):52-56.LIU Yang,LUO Yuan-hui,WANG Li-jun.Research and development trend of Cu-15Ni-8Sn alloy[J].Metallic Functional Materials,2013,20(2):52-56.
• [4] 彭广威，甘雪萍.Cu-15Ni-8Sn合金的研究现状及展望[J].模具制造，2016,16(7):73-76.PENG Guang-wei,GAN Xue-ping.Research progress and prospect of Cu-15Ni-8Sn alloy[J].Die and Mould Manufacture,2016,16(7):73-76.
• [5] 郑史烈，吴年强，曾跃武，等.高弹性导电合金Cu-Ni-Sn的研究现状[J].材料科学与工程，1997(3):62-66.ZHENG Shi-lie,WU Nian-qiang,ZENG Yue-wu,et al.High elastic Cu-Ni-Sn alloy for electronics application[J].Materials Science and Engineering,1997(3):62-66.
• [6] 赵洋，黄国杰，王建伟.Cu-Ni-Sn扩散偶的界面过渡层固相序列分析[J].稀有金属，2017,41(2):140-145.ZHAO Yang,HUANG Guo-jie,WANG Jian-wei.Solid phase transition layer sequences of Cu-Ni-Sn diffusion couple interface[J].Chinese Journal of Rare Metals,2017,41(2):140-145.
• [7] 宋练鹏，叶江，尹志民，等.高强耐磨Cu-Ni-Sn合金的研究[J].湖南有色金属，2001(4):29-31.SONG Lian-peng,YE Jiang,YIN Zhi-min,et al.On Cu-Ni-Sn alloy with high-strength and wearability[J].Hunan Nonferrous Metals,2001(4):29-31.
• [8] 李健，冯再新，左森，等.采用正交试验优化Cu-Ni-Sn合金的热处理工艺[J].金属热处理，2021,46(3):61-66.LI Jian,FENG Zai-xin,ZUO Sen,et al.Optimum heat treatment process of Cu-Ni-Sn alloy by orthogonal test[J].Heat Treatment of Metals,2021,46(3):61-66.
• [9] Zhang G,Liu S,Chen C,et al.Effect of heat treatment on microstructure and mechanical properties of a selective laser melted Cu-15Ni-8Sn alloy[J].Materials Science and Engineering A,2019,763:138132.
• [10] 邢岩，李周，甘雪萍，等.形变热处理对Cu-15Ni-8Sn系合金组织结构与性能的影响[J].稀有金属材料与工程，2018,47(1):286-292.XING Yan,LI Zhou,GAN Xue-ping,et al.Effect of thermo-mechanical treatment on microstructure and properties of Cu-15Ni-8Sn alloy[J].Rare Metal Materials and Engineering,2018,47(1):286-292.
• [11] Jiang Y,Li Z,Xiao Z,et al.Microstructure and properties of a Cu-Ni-Sn alloy treated by two-stage thermomechanical processing[J].JOM:the Journal of the Minerals,Metals and Materials Society,2019,71(8):2734-2741.
• [12] 罗伟，甘雪萍，张县委，等.粉末冶金Cu-15Ni-8Sn合金时效组织的演变行为[J].粉末冶金材料科学与工程，2016,21(5):809-816.LUO Wei,GAN Xue-ping,ZHANG Xian-wei,et al.Microstructure evolution of powder metallurgy Cu-15Ni-8Sn alloy at aging procedure[J].Materials Science and Engineering of Powder Metallurgy,2016,21(5):809-816.
• [13] 周学浩，孙有平，王文熙，等.固溶时效对Al-Mg-Si-Cu合金组织和力学性能的影响[J].材料热处理学报，2017,38(2):30-37.ZHOU Xue-hao,SUN You-ping,WANG Wen-xi,et al.Effect of solid solution and aging treatment on microstructure and mechanical properties 0f Al-Mg-Si-Cu alloy[J].Transactions of Materials and Heat Treatment,2017,38(2):30-37.
• [14] 黄国杰，肖翔鹏，马吉苗，等.固溶时效对Cu-1.4Ni-1.2Co-0.6Si合金组织性能的影响[J].材料热处理学报，2014,35(8):58-63.HUANG Guo-jie,XIAO Xiang-peng,MA Ji-miao,et al.Effect of solid solution and aging process on microstructure and properties of Cu-1.4Ni-1.2Co-0.6Si alloy[J].Transactions of Materials and Heat Treatment,2014,35(8):58-63.
• [15] 李岳桥.热处理工艺对铜镍锡合金力学性能和微观组织的影响[D].太原：中北大学，2021.LI Yue-qiao.Effect of heat treatment process on mechanical properties and microstructure of Cu-Ni-Sn alloy[D].Taiyuan:North University of China,2021.
• [16] 周允红，周晓龙，曹建春，等.时效对铸造Cu-15Ni-8Sn合金组织与性能的影响[J].金属热处理，2014,39(8):96-100.ZHOU Yun-hong,ZHOU Xiao-long,CAO Jian-chun,et al.Effect of aging process on microstructure and properties of Cu-15Ni-8Sn cast alloy[J].Heat Treatment of Metals,2014,39(8):96-100.
• [17] 王巽.热处理工艺对Cu-15Ni-8Sn(-0.3Si-0.1Ti)合金微观组织与力学性能的影响[D].广州：华南理工大学，2017.WANG Xun.Effect of heat treatment on microstructure and mechanical properties of Cu-15Ni-8Sn(-0.3Si-0.1Ti) alloy[D].Guangzhou:South China University of Technology,2017.
• [18] 王艳辉.Cu-15Ni-8Sn-XSi合金和Cu-9Ni-2.5Sn-1.5Al-0.5Si合金中的相变及其对合金性能的影响[D].长沙：中南大学，2004.WANG Yan-hui.Phase transformations of Cu-15Ni-8Sn-XSi and Cu-9Ni-2.5Sn-1.5A1-0.5Si alloys and their effects on the alloy’s properties[D].Changsha:Central South University,2004.
• [19] 朱锐，张峻魁，石锋，等.稀土元素在铜中的作用机理研究进展[J].材料热处理学报，2022,43(7):1-8.ZHU Rui,ZHANG Jun-kui,SHI Feng,et al.Research progress on functional mechanisms of rare earth elements in copper[J].Transactions of Materials and Heat Treatment,2022,43(7):1-8.
• [20] 叶江.高强耐磨Cu-Ni-Sn合金时效研究[D].长沙：中南大学，2002.YE Jiang.Aging study of Cu-Ni-Sn alloy with high strength and wear resistance[D].Changsha:Central South University,2002.
• [21] Wang Y H,Wang M P,Hong B.Strengthening of Cu-15Ni-8Sn alloy[J].Transactions of Materials and Heat Treatment,2004,25(5):97-100.
• [22] Zhao J C,Notis M R.Spinodal decomposition,ordering transformation,and discontinuous precipitation in a Cu-15Ni-8Sn alloy[J].Acta Materialia,1998,46(12):4203-4218.
• [23] Alili B,Bradai D,Zieba P.On the discontinuous precipitation reaction and solute redistribution in a Cu-15%Ni-8%Sn alloy[J].Materials Characterization,2008,59(10):1526-1530.
• [24] 刘宇轩，吴伟，陈强，等.铸态和时效态Cu-15Ni-8Sn合金的摩擦磨损性能[J].机械工程材料，2015,39(7):73-76.LIU Yu-xuan,WU Wei,CHEN Qiang,et al.Friction and wear properties of as-cast and aged Cu-15Ni-8Sn alloy[J].Materials for Mechanical Engineering,2015,39(7):73-76.
• [25] Zhou Y J,Song K X,Xing J D,et al.Mechanical properties and fracture behavior of Cu-Co-Be alloy after plastic deformation and heat treatment[J].Journal of Iron and Steel Research,International,2016,23(9):933-939.

文章评论(Comment)：