摘要
研究了用于电车线材料的自生复合Cu Cr合金的综合性能及其热稳定性。实验表明 :自生复合Cu Cr合金不仅在室温下具有优良的综合性能M指标 (σ2b·σr) ,而且还具有良好的热稳定性。室温下 ,自生复合Cu Cr合金线的综合性能可高达 18.3× 10 6MPa2 · % ,高于目前所知各种铜合金电车线 ;而在 5 0 0℃ ,3h加热保温条件下 ,自生复合Cu Cr合金的综合性能仅下降 3%。
The synthetic properties and the thermal stability of in situ composite Cu Cr alloy, which is potentially used for trolley cables, were reported. The results show that in situ composite Cu Cr alloy has not only high mechanical properties (ultimate tensile strength σ b and elongation rate ( δ )) and good relative conductivity σ r, i.e., good synthetic property that is scaled by M index ( σ 2 b· σ r), under condition of room temperature, but also excellent thermal stability of the synthetic property. At room temperature, the synthetic property of in situ composite Cu Cr could be up to 18.3×10 6?MPa 2·%, which is higher than those of commonly used copper contact cables. Being heated for 3?h at 500?℃, the synthetic property of in situ composite Cu Cr alloy only decreased by 3%. And the relationship between thermal stability and strengthening mechanism of in situ composite alloy were also analyzed.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2002年第2期309-314,共6页
The Chinese Journal of Nonferrous Metals
基金
上海市科委发展基金资助项目 (972 112 0 47)
