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采用真空高频感应炉喷铸技术,以Cu-0.5Cr-0.2Zr-0.02Y为原材料,通过在石墨坩埚中熔炼液相Cr与石墨C反应原位生成液相Cr3C2金属碳化物,制备了颗粒增强Cr3C2/Cu复合材料。研究了该材料的显微组织、力学性能和电学性能。结果表明,经压延变形和人工时效处理后该材料的显微组织特征为以稳定的等轴晶α-Cu相为基;经90%压延变形+763K时效45min处理后,该材料的硬度(HV)为182.7,电导率为48.4MS/m。
Using vacuum high-frequency induction furnace spray casting technology, Cu-0.5Cr-0.2Zr-0.02Y was used as the raw material to produce liquid phase Cr3C2 metal carbide in situ through the reaction of liquid phase Cr and graphite C in graphite crucible, Reinforced Cr3C2 / Cu composites. The microstructure, mechanical properties and electrical properties of the material were studied. The results show that the microstructure of the material after rolling deformation and artificial aging treatment is characterized by the stable equiaxed α-Cu phase; after 90% calendering deformation + aging treatment at 763K for 45 min, the hardness (HV ) Was 182.7 and the electrical conductivity was 48.4 MS / m.