Cu-5Fe-2Sn合金的时效析出动力学
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摘要
研究了时效温度和时间对Cu-5Fe-2Sn合金强度与导电性能的影响。根据导电率与析出相转变量之间关系,计算了Cu-5Fe-2Sn合金时效过程中析出相的转变率;借助Martition定律和Avrami经验方程,得到了Cu-5Fe-2Sn合金在不同时效温度下的动力学方程和导电率方程。与实验结果比较发现,导电率方程可准确表达Cu-5Fe-2Sn合金时效过程中导电率的变化。
The effect of aging temperature and time on strength and conductivity of Cu-5Fe-2Sn alloy was studied. The transformation rate of precipitated phase of the Cu-5Fe-2Sn alloy during aging was calculated according to the relationship between the conductivity and the transformation amount of precipitated phase. With the help of Martition's rule and Avrami's empirical equation, the phase transformation kinetics equation and conductivity equation of the Cu-5Fe-2Sn alloy at different aging temperatures were obtained. Compared with the experimental results, it is found that the conductivity equation can accurately express the change of conductivity of the Cu-5Fe-2Sn alloy during aging.
The effect of aging temperature and time on strength and conductivity of Cu-5Fe-2Sn alloy was studied. The transformation rate of precipitated phase of the Cu-5Fe-2Sn alloy during aging was calculated according to the relationship between the conductivity and the transformation amount of precipitated phase. With the help of Martition's rule and Avrami's empirical equation, the phase transformation kinetics equation and conductivity equation of the Cu-5Fe-2Sn alloy at different aging temperatures were obtained. Compared with the experimental results, it is found that the conductivity equation can accurately express the change of conductivity of the Cu-5Fe-2Sn alloy during aging.
引文
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[4] 袁竭,隆永胜,赵顺洪,等.高强高导Cu合金强化技术研究进展[J].特种铸造及有色合金,2015,35(8):828-832.YUAN Jie,LONG Yong-sheng,ZHAO Shun-hong,et al.Progress in strengthening high strength and high conductive copper alloys[J].Special Casting and Nonferrous Alloys,2015,35(8):828-832.
[5] Liu K M,Lu D P,Zhou H T,et al.Effect of Ag microalloying on the microstructure and properties of Cu-14Fe in situ composite[J].Materials Science and Engineering A,2010,527(18/19):4953-4958.
[6] 陈毅,张进东,孟亮.时效工艺对Cu-12%Fe合金组织性能的影响[J].材料热处理学报,2009,30(6):75-78.CHEN Yi,ZHANG Jin-dong,MENG Liang.Effect of aging process on microstructure and properties of Cu-12%Fe alloy[J].Transactions of Materials and Heat Treatment,2009,30(6):75-78.
[7] 李勇,易丹青,柳瑞清.时效处理对形变Cu-10Fe-3Ag组织及性能的影响[J].塑性工程学报,2010,17(4):135-139.LI Yong,YI Dan-qing,LIU Rui-qing.Effect of aging treatment on microstructure and mechanical properties of Cu-10Fe-3Ag in-situ composite[J].Journal of Plasticity Engineering,2010,17(4):135-139.
[8] 李明生,姚再起,刘书华,等.时效处理对Cu-13Fe合金力学性能和导电性的影响[J].热加工工艺,2004,(2):27-28.LI Ming-sheng,YAO Zai-qi,LIU Shu-hua,et al.Effect of ageing on mechanical properties and conductivity of Cu-13Fe alloy[J].Hot Working Technology,2004,(2):27-28.
[9] 丁雨田,孟斌,高钰璧,等.时效处理对 GH3625 合金管材组织及性能的影响[J].材料热处理学报,2018,39(4):70-77.DING Yu-tian,MENG Bin,GAO Yu-bi,et al.Effect of aging treatment on microstructure and properties of GH3625 alloy tube[J].Transactions of Materials and Heat Treatment,2018,39(4):70-77.
[10] 王敬忠,刘阿娇,李科元,等.固溶和时效处理对热轧态825合金微观组织的影响[J].材料热处理学报,2018,39(1):58-65.WANG Jing-zhong,LIU A-jiao,LI Ke-yuan.et al.Effect of solution and aging treatment on microstructure of hot rolled 825 alloy[J].Transactions of Materials and Heat Treatment,2018,39(1):58-65.
[11] 赵晓燕,宋航,王旭.时效工艺对轧制态 7075 铝合金耐蚀性能的影响[J].材料热处理学报,2018,39(3):21-29.ZHAO Xiao-yan,SONG Hang,WANG Xu.Effect of aging process on corrosion behavior of rolled 7075 aluminum alloy[J].Transactions of Materials and Heat Treatment,2018,39(3):21-29.
[12] Huang F X,Ma J S,Ning H L,et al.Precipitation in Cu-Ni-Si-Zn alloy for lead frame[J].Materials Letters,2003,57:2135-2139.
[13] Dumanska M T,Zieba P,Pawloski A,et al.Practical aspects of discontinuous precipitation and dissolution[J].Materials Chemistry and Physics,2003,80:476-481.
[14] Gao L Q,Yang X,Zhang X F,et al.Aging behavior and phase transformation of the Cu-0.2 wt%Zr-0.15 wt%Y alloy[J].Vacuum,2019,159:367-373.
[15] Lockyer S A,Noble F W.Precipitate structure in a Cu-Ni-Si alloy[J].Journal of Materials Science,1994,29:218-226.
[16] Lei Q,Li Z,PAN Z Y,et al.Dynamics of phase transformation of Cu-Ni-Si alloy with super-high strength and high conductivity during aging[J].Transaction of Nonferrous Metals Society of China,2010,20:1006-1011.
[17] Cahn R W,Haasen P.Physical Metallurgy[M].4th Ed.North-Holland:Elsevier Publishing,1996.
[18] Kramer E J,Edwin L,Robert W.Comprehensive Treatment[M].Materials Science and Technology,1993.