TLP Bonding of Al-Al3V Nano Composite and Evaluation of its Properties

In this research, the bonding of aluminum matrix nanocomposites reinforced by Al3V particles was investigated using a transient liquid phase of bonding process and evaluating its properties. The effect of temperature and time of bonding on the properties was also investigated. For this purpose, Al-Al3V nanocomposite components were first prepared for bonding. The copper metal was used as the intermediate layer and bonding of these components was investigated by the transient liquid phase method at 560, 580 and 600°C, and 20, 40 and 60 min. Scanning electron microscopy was used to evaluate the microstructure of the joint. The shear strength of the joints was also evaluated by a pressure test device. The results indicated better bonding at 580 and 600°C than other samples. With increasing bonding temperature, the melt volume increased at the bonding joint and thus a wider surface area is filled by melt. According to the microhardness results, the maximum hardness of the joint is at 600 ° C for 20 min due to the diffusion of copper and formation of Al2Cu precipitated particles around the joint seam. The maximum joint shear strength of 65 MPa was achieved at 600 ° C for 40 min.