Cu-0.8Mg-0.15Ce合金的时效强化特性
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摘要
研究了冷变形量、时效温度和时效时间对Cu-0.8Mg-0.15Ce合金导电率和硬度变化规律的影响。结果表明,时效前进行冷变形处理可以显著提高合金的导电率和硬度;当合金经过60%冷变形,在时效温度450℃下时效2 h,其综合性能最好,导电率和显微硬度分别为48.3%·IACS和169 HV0.1;得到了Cu-0.8Mg-0.15Ce合金在450℃时效温度下的导电率方程和转变动力学方程。
Effects of cold deformation, aging temperature and aging time on conductivity and hardness of Cu-0.8 Mg-0.15 Ce alloy were studied. The results show that the conductivity and hardness of the Cu-0.8 Mg-0.15 Ce alloy can be significantly improved by cold deformation treatment before aging. When the alloy is subjected to 60% cold deformation and aged at 450 ℃ for 2 h, its comprehensive properties are the best, the conductivity and microhardness of the alloy are 48.3 %·IACS and 169 HV0.1, respectively. The conductivity equation and transformation kinetics equation of the Cu-0.8 Mg-0.15 Ce alloy aging at 450 ℃ are obtained.
Effects of cold deformation, aging temperature and aging time on conductivity and hardness of Cu-0.8 Mg-0.15 Ce alloy were studied. The results show that the conductivity and hardness of the Cu-0.8 Mg-0.15 Ce alloy can be significantly improved by cold deformation treatment before aging. When the alloy is subjected to 60% cold deformation and aged at 450 ℃ for 2 h, its comprehensive properties are the best, the conductivity and microhardness of the alloy are 48.3 %·IACS and 169 HV0.1, respectively. The conductivity equation and transformation kinetics equation of the Cu-0.8 Mg-0.15 Ce alloy aging at 450 ℃ are obtained.
引文
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[2] 尹伊,高仕斌,王明越,等.高速铁路接触网参数特征提取[J].电气化铁道,2018,29(5):29-32.YIN Yi,GAO Shi-bin,WANG Ming-yue,et al.Extraction of characteristics of OCS parameters for high speed railways[J].Electric Railway,2018,29(5):29-32.
[3] 王永鹏,宋克兴,国秀花,等.高速电气化铁路接触导线的应用现状及研究进展[J].热加工工艺,2009,38(14):32-35.WANG Yong-peng,SONG Ke-xing,GUO Xiu-hua,et al.Application actuality and research progress of contact wire for high-speed electric railway[J].Hot Working Technology,2009,38(14):32-35.
[4] 雷静果,刘平,赵冬梅,等.用导电率研究Cu-Ni-Si-Cr合金时效早期相变动力学[J].材料热处理学报,2003,24(4):22-28.LEI Jing-guo,LIU Ping,ZHAO Dong-mei,et al.Study on the transformation kinetics of early stage aging of Cu-Ni-Si alloy by measuring the electric conductivity[J].Transactions of Materials and Heat Treatment,2003,24(4):22-28.
[5] 陆德平,王俊,陆磊,等.硼和铈对Cu-Fe-P合金显微组织和性能的影响[J].中国稀土学报,2006,24(4):475-479.LU De-ping,WANG Jun,LU Lei,et al.Effects of boron and cerium on microstructure and properties of Cu-Fe-P alloy[J].Journal of the Chinese Society of Rare Earths,2006,24(4):475-479.
[6] 刘勇,刘平,李伟,等.Cu-Cr-Zr-Ce合金时效行为和电滑动磨损性能研究[J].摩擦学学报,2005,25(3):265-269.LIU Yong,LIU Ping,LI Wei,et al.Aging behavior and electrical sliding wear properties of Cu-Cr-Zr-Ce alloy[J].Tribology,2005,25(3):265-269.
[7] 孙慧丽,张毅,柴哲,等.Cu-Zr-Nd合金的时效强化和析出动力学[J].材料热处理学报,2016,37(9):86-91.SUN Hui-li,ZHANG Yi,CHAI Zhe,et al.Aging strengthening and precipitation kinetics of Cu-Zr-Nd alloy[J].Transactions of Materials and Heat Treatment,2016,37(9):86-91.
[8] 蒋月月,王昭东,邓想涛.微量稀土Ce对中碳微合金钢连续冷却转变行为的影响[J].金属热处理,2017,42(12):57-60.JIANG Yue-yue,WANG Zhao-dong,DENG Xiang-tao.Effect of trace rare earth Ce on continuous cooling transformation behavior of microalloyed medium carbon steel[J].Heat Treatment of Metals,2016,41(9):57-60.
[9] 朱承程,马爱斌,江静华,等.ECAP及后续退火对Cu-Mg合金组织与性能的影响[J].中国有色金属学报,2013,23(5):1331-1337.ZHU Cheng-cheng,MA Ai-bin,JIANG Jing-hua,et al.Microstructure and properties of Cu-Mg alloys processed by ECAP and subsequent annealing[J].The Chinese Journal of Nonferrous Metals,2013,23(5):1331-1337.
[10] 潘志勇,汪明朴,李周,等.超高强度Cu-5.2Ni-1.2Si合金的形变热处理[J].中国有色金属学报,2007,17(11):1821-1826.PAN Zhi-yong,WANG Ming-pu,LI Zhou,et al.Thermomechanical treatment of super high strength Cu-5.2Ni-1.2Si alloy[J].The Chinese Journal of Nonferrous Metals,2007,17(11):1821-1826.
[11] Suzuki S,Shibutani N,Mimura K,et al.Improvement in strength and electrical conductivity of Cu-Ni-Si alloys by aging and cold rolling[J].Journal of Alloys and Compounds,2006,417:116-120.
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[13] 王迎鲜,贾淑果,周延军,等.时效时间对Cu-0.2Be-0.5Co合金组织及性能的影响[J].金属热处理,2017,42(11):152-155.WANG Ying-xian,JIA Shu-guo,ZHOU Yan-jun,et al.Effect of aging time on microstructure and properties of Cu-0.2Be-0.5Co alloy[J].Heat Treatment of Metals,2017,42(11):152-155.
[14] 赵军,闫志刚,陈久川,等.高压时效处理对Cu54.27Cr45.73合金力学性能及电导率的影响[J].材料热处理学报,2016,37(1):18-22.ZHAO Jun,YAN Zhi-gang,CHEN Jiu-chuan,et al.Effect of high pressure aging treatment on mechanical properties and electrical conductivity of Cu54.27Cr45.73 alloy[J].Transactions of Materials and Heat Treatment,2016,37(1):18-22.
[15] 张清,李全安,陈君,等.时效对Mg-5Y-3Sm-0.8Ca合金组织及硬度的影响[J].金属热处理,2018,43(1):163-166.ZHANG Qing,LI Quan-an,CHEN Jun,et al.Effect of aging on microstructure and hardness of Mg-5Y-3Sm-0.8Ca alloy[J].Heat Treatment of Metals,2018,43(1):163-166.
[16] 潘志勇,汪明朴,李周,等.时效及冷变形对Cu-5.2Ni-1.2Si合金组织和性能的影响[J].稀有金属材料与工程,2009,38(1):485-489.PAN Zhi-yong,WANG Ming-pu,LI Zhou,et al.Effects of aging and cold deformation on microstructure and properties of Cu-5.2Ni-1.2Si alloy[J].Rare Metal Materials and Engineering,2009,38(1):485-489.
[17] 张毅,刘平,田保红,等.Cu-2.0Ni-0.5Si合金时效析出动力学研究[J].功能材料,2010,41(10):1827-1830.ZHANG Yi,LIU Ping,TIAN Bao-hong,et al.Study on aging kinetics of Cu-2.0Ni-0.5Si alloy[J].Journal of Functional Materials,2010,41(10):1827-1830.