赵世恒,冯江,张彦敏,张朝民,赵培峰,单运启,皇保欢,宋克兴

• 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)：

采用大气熔炼制备了Cu-Ni-Co-Si-Mg-xCr(x=0%、0.15%、0.32%、0.4%)4种合金，热挤压后对其在950、980和1010℃进行1.5 h的固溶处理。采用能谱分析铸态合金中Cr的存在形式，分析不同Cr含量对合金组织性能的影响，采用维氏硬度仪和电导仪测试不同状态下合金的硬度及导电率。结果表明：Cr与Co、Si元素偏聚产生Co_6Cr_8Si_5金属间化合物，且占比随着Cr含量的增加而增加。随着固溶温度的升高，合金晶粒中未回溶第二相和Co_6Cr_8Si_5金属间化合物逐渐减少，晶粒尺寸逐渐增大，且Co_6Cr_8Si_5金属间化合物由于钉扎作用有效抑制合金晶粒的长大。固溶处理后，元素及第二相粒子回溶降低弥散强化效果，提升固溶强化效果，此消彼长导致硬度变化无规律，导电率整体下降。Cu-Ni-Co-Si-Mg-xCr(x=0%、0.15%、0.32%、0.4%)合金经980和1010℃固溶处理1.5 h,可使晶粒尺寸无剧烈长大的条件下提高合金的过饱和度，增加后续时效析出驱动力。

关键词(KeyWords)： Cu-Ni-Co-Si-Mg-xCr合金;固溶处理;组织;性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52373313);; 河南省重点研发与推广专项(242102231023)

作者(Author): 赵世恒,冯江,张彦敏,张朝民,赵培峰,单运启,皇保欢,宋克兴

DOI: 10.13289/j.issn.1009-6264.2024-0185

参考文献(References)：

• [1] 徐翩，尚文静，姜业欣.Cu-Ni-Si系合金的研究进展[J].上海有色金属，2011,32(4):182-186.XU Pian,SHANG Wen-jing,JIANG Ye-xin.Research development of Cu-Ni-Si alloys[J].Shanghai Nonferrous Metals,2011,32(4):182-186.
• [2] Liao W,Hu Y,Liu Q.High strength and high electrical conductivity C70250 copper alloy with fibrous structure reinforced by high density,multi-scale nano-precipitates and dislocation[J].Materials Science and Engineering A,2022,846:143283.
• [3] Tao S,Lu Z,Xie H,et al.Effect of preparation method and heat treatment on microstructure and properties of Cu-Ni-Si alloy[J].Materials Letters,2022,315:131790.
• [4] Wei H,Chen Y,Zhao Y,et al.Correlation mechanism of grain orientation/microstructure and mechanical properties of Cu-Ni-Si-Co alloy[J].Materials Science and Engineering A,2021,814:141239.
• [5] Lei Q,Li S,Zhu J,et al.Microstructural evolution,phase transition,and physics properties of a high strength Cu-Ni-Si-Al alloy[J].Materials Characterization,2019,147(1):315-323.
• [6] Lei Q,Xiao Z,Hu W,et al.Phase transformation behaviors and properties of a high strength Cu-Ni-Si alloy[J].Materials Science and Engineering A,2017,697(6):37-47.
• [7] 单运启，张彦敏，张朝民，等.形变热处理对Cu-Ni-Si合金组织性能的影响[J].材料热处理学报，2024,45(1):95-102.SHAN Yun-qi,ZHANG Yan-min,ZHANG Chao-min,et al.Effect of thermomechanical treatment on microstructure and properties of Cu-Ni-Si alloy[J].Transactions of Materials and Heat Treatment,2024,45(1):95-102.
• [8] Lee E,Han S,Euh K,et al.Effect of Ti addition on tensile properties of Cu-Ni-Si alloys[J].Metals and Materials International,2011,17(4):569-576.
• [9] Watanabe C,Takeshita S,Monzen R.Effects of small addition of Ti on strength and microstructure of a Cu-Ni-Si alloy[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2015,46(6):2469-2475.
• [10] Zhao Z,Xiao Z,Li Z,et al.Effect of magnesium on microstructure and properties of Cu-Cr alloy[J].Journal of Alloys and Compounds,2018,752(7):191-197.
• [11] Xiao T,Sheng X F,Lei Q,et al.Effect of magnesium on microstructure refinements and properties enhancements in high-strength CuNiSi alloys[J].Acta Metallurgica Sinica (English Letters),2019,33(3):375-384.
• [12] Chen W,Li Z,Xie H,et al.Influence of zinc on coarsening of δ-Ni2Si particles,aging behavior and hardness in a Cu-Ni-Si alloy[J].Journal of Materials Engineering and Performance,2017,26(6):2459-2464.
• [13] Wang W,Shi B,Wang C,et al.Effects of Sn and Nb additions on the corrosion resistance of Cu-Ni-Si-Mg alloy[J].Corrosion,2022,78(11):1048-1057.
• [14] Li Z,Pan Z Y,Zhao Y Y,et al.Microstructure and properties of high-conductivity,super-high-strength Cu-8.0Ni-1.8Si-0.6Sn-0.15Mg alloy[J].Journal of Materials Research,2009,24(6):2123-2129.
• [15] 周孟，饶劢攀，刘勇，等.Zr含量对Cu-Ni-Si-Co-Zr合金热变形行为的影响[J].材料热处理学报，2022,43(11):180-189.ZHOU Meng,RAO Mai-pan,LIU Yong,et al.Effect of Zr content on hot deformation behavior of Cu-Ni-Si-Co-Zr alloy[J].Transactions of Materials and Heat Treatment,2022,43(11):180-189.
• [16] 肖翔鹏.新型高性能Cu-Ni-Co-Si合金制备及组织性能的研究[D].北京：北京有色金属研究总院，2013.XIAO Xiang-peng.Research on fabrication,microstructure and properties of Cu-Ni-Co-Si alloy with high performance[D].Beijing:Beijing General Research Institute of Nonferrous Metals,2013.
• [17] Huang J,Xiao Z,Dai J,et al.Microstructure and properties of a novel Cu-Ni-Co-Si-Mg alloy with super-high strength and conductivity[J].Materials Science and Engineering A,2019,744(1):754-763.
• [18] Li J,Huang G,Mi X,et al.Influence of the Ni/Co mass ratio on the microstructure and properties of quaternary Cu-Ni-Co-Si alloys[J].Materials (Basel),2019,12(18):2855-2870.
• [19] Rdzawski Z,Stobrawa J.Thermomechanical processing of Cu-Ni-Si-Cr-Mg alloy[J].Materials Science and Technology,1993,9(2):142-149.
• [20] 王维.CuNiSi-(Cr,Zr)合金形变时效行为与性能研究[D].大连：大连理工大学，2020.WANG Wei.Research on the deformation aging behaviors and properties of CuNiSi-(Cr,Zr) alloys[D].Dalian:Dalian University of Technology,2020.
• [21] 马鹏.Cu-Ni-Si合金加工工艺与性能的研究[J].热处理，2016,31(3):7-12.MA Peng.Processing technology and property of Cu-Ni-Si alloy[J].Heat Treatment of Metals,2016,31(3):7-12.
• [22] 孙雨情.Cu-Cr-(Zr,Mg)合金热稳定性和成形性能及相关机理研究[D].北京：北京科技大学，2023.SUN Yu-qing.Study on thermal stability,formability and related mechanism of Cu-Cr-(Zr,Mg) alloy[D].Beijing:University of Science and Technology Beijing,2023.
• [23] 叶青，冯兴宇，赵鸿金.固溶时间对Cu-Ni-Si-Mg合金组织性能的影响[J].有色金属科学与工程，2017,8(3):79-83.YE Qing,FENG Xing-yu,ZHAO Hong-jin.Effects of solid solution time on microstructure and properties of Cu-Ni-Si-Mg alloy[J].Nonferrous Metals Science and Engineering,2017,8(3):79-83.
• [24] 贾飞，赵丹，田希晨，等.固溶温度对双辊铸轧Cu-3.2Ni-0.75Si合金组织与性能的影响[J].特种铸造及有色合金，2022,42(4):500-504.JIA Fei,ZHAO Dan,TIAN Xi-chen,et al.Effect of solution temperature on microstructure and properties of Cu-3.2-Ni-0.75Si alloy in Two-roll casting rolling[J].Special Casting and Non-ferrous Alloys,2022,42(4):500-504.
• [25] 肖翔鹏，黄国杰，程磊，等.固溶时效工艺对Cu-Ni-Si合金组织和性能的影响[J].稀有金属，2011,35(5):673-678.XIAO Xiang-peng,HUANG Guo-jie,CHENG Lei,et al.Effect of solution and aging technique on microstructure and properties of Cu-Ni-Si alloy[J].Rare Metals,2011,35(5):673-678.
• [26] 邹金峰，余方新，程建奕，等.固溶时效工艺对Cu-Ni-Co-Si合金组织和性能的影响[J].金属热处理，2020,45(7):11-16.ZOU Jin-feng,YU Fang-xin,CHENG Jian-yi,et al.Effect of solution and aging on microstructure and properties of Cu-Ni-Co-Si alloy[J].Heat Treatment of Metals,2020,45(7):11-16.
• [27] Gupta K P.The Co-Cr-Si (Cobalt-Chromium-Silicon) system[J].Journal of Phase Equilibria and Diffusion,2010,31(3):300-307.
• [28] Pan S,Yu J,Han J,et al.Customized development of promising Cu-Cr-Ni-Co-Si alloys enabled by integrated machine learning and characterization[J].Acta Materialia,2023,243:118484.
• [29] Ma M,Li Z,Xiao Z,et al.Microstructure and properties of Cu-Ni-Co-Si-Cr-Mg alloys with different Si contents after multi-step thermo-mechanical treatment[J].Materials Science and Engineering A,2022,850:143532.
• [30] Wang W,Kang H,Chen Z,et al.Effects of Cr and Zr additions on microstructure and properties of Cu-Ni-Si alloys[J].Materials Science and Engineering A,2016,673:378-390.
• [31] Zhao Z,Xiao Z,Li Z,et al.Microstructure and properties of a Cu-Ni-Si-Co-Cr alloy with high strength and high conductivity[J].Materials Science and Engineering A,2019,759:396-403.
• [32] Han S Z,Choi E A,Lim S H,et al.Alloy design strategies to increase strength and its trade-offs together[J].Progress in Materials Science,2021,117:100720.

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