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通过添加适量的Zr元素,采用非真空熔炼制备了Cu-2.3Ni-0.30Be-0.15Zr合金;并对该合金进行了热处理强化工艺研究。用硬度计、涡流电导率测试仪和万能试验机测试合金性能,用金相显微镜(OM)观察合金的组织,探讨了合金的强化机理。结果表明,冷变形促进了合金的新相析出,合金经940℃×1.5h+30%冷变形+460℃×3h热处理后,其硬度(HB)达251,电导率达28.48MS/m,合金具有良好的综合性能。
The Cu-2.3Ni-0.30Be-0.15Zr alloy was prepared by adding appropriate amount of Zr and non-vacuum melting. The heat treatment of the alloy was studied. The properties of the alloy were tested with a durometer, an eddy current conductivity tester and a universal testing machine. The microstructure of the alloy was observed with a metallographic microscope (OM), and the strengthening mechanism of the alloy was discussed. The results show that cold deformation promotes the precipitation of a new phase of the alloy. The hardness (HB) reaches 251 and the conductivity reaches 28.48 MS / m after 940 ℃ × 1.5h + 30% cold deformation + 460 ℃ × 3h. Has a good overall performance.