ABSTRACT

Cu-Al composites have an important industrial prospect due to their excellent properties. The interface layer of Cu-Al composites has always been a key factor affecting its performance. Vibration cast-rolling process was independently developed to improve the interface properties of Cu-Al laminated composites. A pilot-scale experiment of solid-liquid composite of Cu-Al was carried out on a self-made vibration cast-rolling pilot test platform. The interface was observed by scanning electron microscope (SEM), and the phase of the interface was analyzed by X-ray diffraction (XRD). Based on the experimental results, a cell model of intermetallic compounds was established, and the mechanical and electronic properties of intermetallic compounds were calculated by first principles to explore the optimization mechanism. The results show that vibration can improve the comprehensive properties of Cu-Al composite plate interface, which can be attributed to the change of intermetallic compound phase and proportion.

摘要

铜铝复合材料由于其优异的性能而具有重要的工业前景。Cu-Al复合材料的界面层一直是影响其性能的关键因素。自主开发了振动铸轧工艺，以改善铜铝层压复合材料的界面性能。在自制的振动铸轧中试平台上进行了Cu-Al固液复合材料的中试实验。通过扫描电子显微镜（SEM）观察界面，并且通过X射线衍射（XRD）分析界面的相。根据实验结果，建立了金属间化合物的晶胞模型，并通过第一性原理计算了金属间化合物的力学性能和电子性能，探索了优化机理。