中间退火对Cu-15Fe-0.15Zr原位复合材料性能的影响

Effect of inter-annealing on performance of Cu-15Fe-0.15Zr in-situ composite

铜基形变原位复合材料是制备高强高导铜合金的新方法。由于Fe元素相对Nb、Ag等元素便宜,且板带铜材需求量巨大,使得Cu-Fe原位复合材料带材制备成为高性能铜合金研究的热点。文章通过冷轧和中间退火工艺制备了Cu-15Fe-0.15Zr形变原位复合材料,重点研究了中间退火对该材料抗拉强度、导电率和软化温度的影响。结果表明,中间退火可以在不损害材料强度的情况下大幅提高其电导率,而且材料的抗软化温度大于550℃。通过变形和中间退火的合理配合,可获得较理想的材料抗拉强度和电导率的匹配。

Deformation-processed Cu-based in-situ composite is interesting to researchers for the preparation of high performance copper alloy presently.Fe element is cheaper than other expensive metal such as Nb,Ag and the sheet or band of copper alloy is used more widely.So the sheets of Cu-Fe in-situ composite will have extensively application in the future.The bands of Cu-15Fe-0.15Zr in-situ composites were produced by cold drawing,cold rolling processes and intermediate annealing.The effect of inter-annealing on its tensile strength,electrical conductivity and resistance softening were studied.The test results show that the electrical conductivity is improved in large extent without decreasing the tensile strength of material with the resistance softening temperature of Cu-15Fe-0.15Zr keeping higher than 550℃.Good performance matching of the tensile strength and the electrical conductivity could be achieved through reasonable matching of deformation and inter-annealing.