| Influence of RE on Ageing Precipitate Characteristics and Softening Resistance of Copper Alloys Contact Wire |
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| 作者姓名： | Liu Yong Liu Ping Tian Baohong Li Wei |
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| 作者单位： | [1]School of Materials Science and Engineering, Xi＇an University of Technology, Xi＇an 710048, China [2]School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China |
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| 摘 要： | The effect of RE （such as Ce, Y and mixed Ce ＋ Y, etc） on ageing precipitate, characteristics and softening resistance of Cu-Cr-Zr alloys contact wire used in electrical railway were investigated in this paper. The results show that the tested Cu-Cr-Zr alloy with trace RE addition could attain higher microhardness and lower electrical conductivity to some extent after being soluted at 950 ℃ for 1 h and aged at 480 ℃. The precipitation process of secondary phase could be accelerated by cold working before ageing treatment which resulted in ageing hardening. Aged at 480 ℃ after 60% cold working, the values of electrical conductivity and microhardness improved significantly compared with that without deformation. The mixed RE （Ce ＋ Y） improved the softening resistance substantially in these trace RE additions, which could increase the soften temperature by 45 ℃.
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| 关 键 词： | 铜合金 软化温度 接触线 显微硬度 稀土 疲劳 电气化铁路 |
Influence of RE on Ageing Precipitate Characteristics and Softening Resistance of Copper Alloys Contact Wire |
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| Liu Yong Liu Ping Tian Baohong Li Wei.Influence of RE on Ageing Precipitate Characteristics and Softening Resistance of Copper Alloys Contact Wire[J].Journal of Rare Earths,2005,23(4):I0009-I0009. |
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| Authors: | Liu;Yong;Liu;Ping;Tian;Baohong;Li;Wei |
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| Abstract: | |
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| Keywords: | electrical railway Cu-Cr-Zr contact wire microhardness electrical conductivity softening temperature rare earths |
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