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以单一添加稀土元素Ce、Y和复合添加Ce+Y的Cu-Cr-Zr合金轨道电路导线为研究对象,研究了合金化元素和热处理工艺对Cu-Cr-Zr合金导线的硬度和电导率的影响,并分析了合金导线的抗高温软化性能。结果表明,添加稀土元素Ce、Y的合金导线时效后的硬度提高了14~20 HV0.1,而电导率降低了2~4%IACS;相同时效时间下合金导线硬度从高至低的顺序为Cu-Cr-Zr-Ce>Cu-Cr-Zr-Y>Cu-Cr-Zr,电导率从高至低的顺序为Cu-Cr-Zr>Cu-Cr-Zr-Ce>Cu-Cr-Zr-Y;复合添加Ce+Y合金导线的软化温度提高了约30℃,Cu-Cr-Zr-Ce-Y合金中的时效析出相主要是Cr Cu2(Zr,Mg)相。
The effects of alloying elements and heat treatment process on the hardness and electrical conductivity of Cu-Cr-Zr alloy wires were studied with single-added rare earth elements Ce, Y and Cu-Cr-Zr alloy with or without Cu + Influence, and analysis of alloy wire high temperature softening performance. The results show that the hardness of the alloy wires with rare earth elements Ce, Y increased by 14-20 HV0.1 and the conductivity decreased by 2-4% IACS. The order of the hardness of the alloy wires with the same aging time is Cu-Cr-Zr-Ce> Cu-Cr-Zr-Y> Cu-Cr-Zr, the order of the electrical conductivity is Cu-Cr-Zr> Cu-Cr-Zr-Ce> Cu-Cr-Zr -Y; the softening temperature of the composite added Ce + Y alloy wire is increased by about 30 ° C, and the predominant precipitation phase in the Cu-Cr-Zr-Ce-Y alloy is the Cr Cu2 (Zr, Mg) phase.