中文摘要：

利用万能材料试验机、金相显微镜、X射线衍射仪和电子探针等仪器,研究了铜/铝/铜冷轧三层复合薄带的热处理工艺对薄带的界面组织和性能的影响。结果表明,随退火温度升高或保温时间的延长,复合带强度降低,塑性增强;退火后复合带界面宽度为1.5-6.5μm,410℃/10 min退火时复合带有最佳的力学性能;界面共有3层结构,有5种脆性化合物相生成,分别是Cu9Al4、Cu4Al3、Cu3Al2、CuAl、CuAl2等,其尺寸数量级为10-4-10-8mm2;在形态上,Cu9Al4、Cu4Al3、Cu3Al2呈多边形块状,内有许多平行板条,CuAl2相呈椭圆状,CuAl呈弥散颗粒状。

英文摘要：

The heating treatment technical parameters and the microstructure of diffusion layer was investigated after cold-rolling bonding for the Cu/Al composite strips by a tensile testing machine, metalloscope, XRD, EMPA, etc. Results show that with the increasing of the annealing temperature or prolonging of the holding time, the Cu/Al composite strips have a lower strength and higher plasticity, and the interface width of composite strips is from 1.5 μm to 6.5 μm. In a conclusion, 410 ℃/10 min is the best heating treatment parameter. There are five intermediate phases, CugAl4, Cu4Al3, Cu3Al2, CuAl, and CuAl2. The size of these intermediate phases is relatively small and at the quality grade of 10 -4-10 -8mm2. The morphology of Cu9Al4, Cu4Al3 and Cu3Al2 is polygonal lump. Also there are a lot of parallel laths in the Cu9Al4. The form of CuAl2 phase is similar to ovoid and that of CuAl phase is dispersive grain.