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对Cu-0.33Cr-0.06Zr合金在450℃下进行不同时效时间及不同电流密度的时效试验。研究了不同电流密度对Cu-0.33Cr-0.06Zr合金时效后电导率的影响。结果表明,在相同时效温度与时间的条件下,合金在电流密度为100A·cm-2的合金电导率低于无电流时效的;而电流密度为400A·cm-2的合金电导率高于无电流时效的。随着电流密度增加,合金的电导率有先下降再上升的趋势。在电流密度为400A·cm-2下时效2h后合金的电导率达到49.53 MS/m,与无电流时效6h相当。说明较大密度的直流电流可以加速溶质元素的析出,大大提高析出效率。
The aging tests of Cu-0.33Cr-0.06Zr alloy at 450 ℃ for different aging time and different current density were carried out. The effects of different current densities on the electrical conductivity of Cu-0.33Cr-0.06Zr alloy after aging were investigated. The results show that under the same aging temperature and time, the electrical conductivity of the alloy is lower than that of the alloy without current at the current density of 100A · cm-2; the conductivity of the alloy with the current density of 400A · cm-2 is higher than that of the alloy with the current density of 400A · cm- Current aging. With the increase of current density, the conductivity of the alloy first decreases and then increases. The conductivity of the alloy reached 49.53 MS / m after aging at a current density of 400A · cm-2 for 2h, which was equivalent to no current aging for 6h. This shows that a larger density of DC current can accelerate the precipitation of solute elements, greatly improving the precipitation efficiency.