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对固-液法制备的铜铝复合板进行不同工艺的轧制并进行300℃×4h退火处理,测定了复合板的抗拉强度、伸长率、界面剥离强度及电导率,利用金相显微镜和扫描电镜等分析了结合界面的组织形貌,研究了轧制及退火工艺对结合界面扩散层组织和复合板性能的影响。结果表明,轧制后形成的CuAl2相降低了复合板的剥离强度和电导率,退火处理可促进结合界面原子互扩散形成Cu9Al4,改善复合板的性能,同时电导率也得以提高。
The copper-aluminum composite plate prepared by the solid-liquid method was subjected to different processes of rolling and annealing at 300 ° C. for 4 hours. The tensile strength, elongation, interfacial peeling strength and electrical conductivity of the composite plate were measured. And scanning electron microscopy (SEM) were used to analyze the microstructure of the interface. The effect of rolling and annealing process on the properties of the interface diffusion layer structure and the composite plate was studied. The results show that the CuAl2 phase formed after rolling reduces the peel strength and electrical conductivity of the composite sheet. The annealing treatment can promote the interdiffusion of the bonding interface atoms to form Cu9Al4, improve the properties of the composite sheet and improve the electrical conductivity.