河南科技大学材料科学与工程学院;有色金属共性技术河南省协同创新中心;江苏迅达电磁线有限公司;河南理工大学机械与动力工程学院;
通过热型水平连铸工艺制备了Cu-3.5Ag合金,经950℃×1 h固溶,以及450℃下分别保温2、4、6和8 h的时效热处理,研究了时效时间对合金性能和析出相特征的影响。结果表明:随着时效时间的增加,合金的硬度呈先急剧升高后缓慢下降趋于平缓的趋势,合金的导电率基本保持不变;随着时效时间增加,析出相形貌、大小和数量均发生显著改变,富Ag相和铜基体始终保持半共格关系且两者具有完全一致的取向,半共格界面有效阻碍了位错运动从而使基体得到强化,相同的取向关系降低了析出相对电子的散射,进而对合金硬度和导电率具有改善效果。试验范围内,Cu-3.5Ag合金经450℃×4 h时效热处理后,硬度和导电率分别为122.62 HV0.1和86.20%IACS,综合性能较好。
208 | 6 | 707 |
下载次数 | 被引频次 | 阅读次数 |
[1] 秦芳莉,李雷,朱利媛,等.定向凝固Cu-2.0Ag合金冷拉拔时性能与组织演变[J].材料热处理学报,2016,37(12):74-79.QIN Fang-li,LI Lei,ZHU Li-yuan,et al.Properties and microstructure of directional solidification Cu-2.0Ag alloy with cold drawing[J].Transactions of Materials and Heat Treatment,2016,37(12):74-79.
[2] 李继林,常丽丽,李胜利,等.退火Cu-0.1Ag合金组织性能及再结晶特征[J].材料热处理学报,2016,37(9):74-79.LI Ji-lin,CHANG Li-li,LI Sheng-li,et al.Microstructure,properties and recrystallization characteristics of annealed Cu-0.1Ag alloy[J].Transactions of Materials and Heat Treatment,2016,37(9):74-79.
[3] 沈月,付作鑫,张国全,等.高强高导铜银合金的研究现状及发展趋势[J].材料导报A,2012,26(7):109-113.SHEN Yue,FU Zuo-xin,ZHANG Guo-quan,et al.Researching prospect and developing tendency on high-strength and high-conductivity copper-silver alloys[J].Materials Review A,2012,26(7):109-113.
[4] 左小伟,郭睿,安佰灵,等.横向磁场下定向凝固Cu-6%Ag合金的组织、硬度和电阻率[J].金属学报,2016,52(2):143-150.ZUO Xiao-wei,GUO Rui,AN Bai-ling,et al.Microstructure,hardness and electrical resistivity of directionally solidified Cu-6%Ag alloy under a transverse magnetic field[J].Acta Metallurgica Sinica,2016,52(2):143-150.
[5] 郭保江,周延军,张彦敏,等.连铸速度对Cu-3.5Ag合金组织性能的影响[J].特种铸造及有色合金,2019,39(7):808-812.GUO Bao-jiang,ZHOU Yan-jun,ZHANG Yan-min,et al.Effects of continuous casting speeds on microstructure and properties of Cu-3.5Ag alloy[J].Special Casting and Nonferrous Alloys,2019,39(7):808-812.
[6] 刘瑞蕊,周海涛,周啸,等.高强高导铜合金的研究现状及发展趋势[J].材料导报A,2012,26(10):100-105.LIU Rui-rui,ZHOU Hai-tao,ZHOU Xiao,et al.Present situation and future prospect of high-strength and high-conductivity Cu alloy[J].Materials Review A,2012,26(10):100-105.
[7] 文姗,常丽丽,尚兴军,等.铜银合金导线的显微组织与性能[J].中国有色金属学报,2015,25(6):1655-1661.WEN Shan,CHANG Li-li,SHANG Xing-jun,et al.Microstructure and properties of Cu-Ag alloy wire[J].The Chinese Journal of Nonferrous Metals,2015,25(6):1655-1661.
[8] 李蕊,左小伟,王恩刚.时效Ag-7wt.%Cu合金的微观组织、电阻率和硬度[J].物理学报,2017,66(2):315-325.LI Rui,ZUO Xiao-wei,WANG En-gang,et al.Microstructure,resistivity,and hardness of aged Ag-7wt.%Cu alloy[J].Acta Physica Sinica,2017,66(2):315-325.
[9] 何钦生,邹兴政,李方,等.Cu-Ag合金原位纤维复合材料研究现状[J].材料导报A,2018,32(8):2684-2700.HE Qin-sheng,ZOU Xing-zheng,LI Fang,et al.Research status of Cu-Ag alloy in-situ filamentary composites[J].Materials Review A,2018,32(8):2684-2700.
[10] Han K,Toplosky V J,Goddard R,et al.Impacts of heat treatment on properties and microstructure of Cu16at%Ag conductors[J].IEEE Transactions on Applied Superconductivity,2012,22(3):6900204-6900204.
[11] 张志刚.高导高强铜银合金丝的开发及连续化生产技术[D].郑州:郑州大学,2013.ZHANG Zhi-gang.Study on high conductivity and high strength copper-silver alloy wire and new continuously manufacturing techniques[D].ZhengZhou:Zhengzhou University,2013.
[12] Cho H,Lee B S,Kang B H,et al.Ageing behavior of Cu-Ag alloys[J].Advanced Materials Research,2008,47-50:1051-1054.
[13] Lin J,Meng L.Effect of aging treatment on microstructure and mechanical properties of Cu-Ag alloys[J].Journal of Alloys and Compounds,2008,454(1/2):150-155.
[14] Liu J B,Meng L.Phase orientation,interface structure,and properties of aged Cu-6 wt.% Ag[J].Journal of Materials Science,2008,43(6):2006-2011.
[15] Srivastava V C,Schneider A,Uhlenwinkel V,et al.Age-hardening characteristics of Cu-2.4Ni-0.6Si alloy produced by the spray forming process[J].Journal of Materials Processing Technology,2004,147(2):174-180.
[16] Wang Y H,Xing P D,Wang P,et al.A novel method to improve the hardness and electrical conductivity of Cu-Cr-Al alloy[J].Journal of Alloys and Compounds,2016,656:581-584.
[17] 林剑,张进东,孟亮.时效处理对Cu-6%Ag合金组织与性能的影响[J].稀有金属材料与工程,2008,37(7):1304-1308.LIN Jian,ZHANG Jin-dong,MENG Liang.Effects of aging on the microstructure and properties of Cu-6%Ag alloy[J].Rare Metal Materials and Engineering,2008,37(7):1304-1308.
[18] 王树森,姚大伟,张远望,等.固溶时效处理及强变形对Cu-1wt%Ag合金的组织和性能的影响[J].材料导报,2018,32:89-92.WANG Shu-sen,YAO Da-wei,ZHANG Yuan-wang,et al.Effect of solution,aging treatment and high-deformation process on microstructure and properties of Cu-1 wt%Ag alloy[J].Materials Review,2018,32:89-92.
[19] 李勇,李焕,赵亚茹,等.Cu-0.3Cr-0.05Ti合金时效析出动力学[J].材料热处理学报,2016,37(5):226-230.LI Yong,Li-huan,ZHAO Ya-ru,et al.Kinetics of precipitation in Cu-0.3Cr-0.5Ti alloy[J].Transactions of Materials and Heat Treatment,2016,37(5):226-230.
[20] 刘嘉斌,曾跃武,张雷,等.Cu-Ag合金中析出相界面结构及其对合金性能的影响[J].北京科技大学学报,2007,29(2):211-215.LIU Jia-bin,ZENG Yue-wu,ZHANG Lei,et al.Interface structure between Ag precipitates and Cu matrix and its effect on the properties of the Cu-Ag alloy[J].Journal of University of Science and Technology Beijing,2007,29(2):211-215.
[21] 黄孝瑛.材料微观结构的电子显微学分析[M].北京:冶金工业出版社,2008.
基本信息:
DOI:10.13289/j.issn.1009-6264.2019-0576
中图分类号:TG146.11;TG156.92
引用信息:
[1]郭保江,周延军,张彦敏等.时效时间对Cu-3.5Ag合金性能及其纳米析出相特征的影响[J],2020,41(06):55-61.DOI:10.13289/j.issn.1009-6264.2019-0576.
基金信息:
国家重点研发计划(2016YFB0301400);; 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)