In this study Al1100/B 4 C composite was manufactured by accumulative roll bonding (ARB) method and it was joined to Al6061 alloy via transient liquid phase technique. The grain size in the manufactured composite was 63nm after eight cycles. Copper was used as the interlayer. In order to find appropriate thickness of interlayer, joining with three interlayers (10, 25 and 50µm) was made in different times and temperatures. Joints were done at temperatures from 560?C to 600?C and at times from 10 to 70 minutes. Optical microscope and scanning electron microscope were used for microstructure investigation and for mechanical properties studies Vickers harness test and shear strength examination were used. It was concluded that interlayer of 25µm has the best joint according to mechanical properties. Thus the rest of the joints were done with 25µm interlayer. Investigation of shear strength showed that the higher shear strength was made at 580?C and 60 min. at lower temperature the content of liquid phase was not enough and at higher temperature porosity and cracks were created at the joint. XRD pattern of samples showed precipitation of CuAl 2 particles at the joint. It was revealed that hardness depends on the content of precipitation particles CuAl 2 . At lower temperature content of this particles is higher so the hardness is higher. At the end one similar joint of Al1100/B 4 C composite was created and was compered with dissimilar joints. Investigations showed that in that dissimilar joint because of alloy elements in Al6061 the content of precipitation particles was higher that cause higher hardness. Comparison of shear strength showed that this two kinds of joints had similar strength but at the similar joint because of nanostructure and a lot of grain boundaries the diffusion was better and the shear strength was a little higher. . Keywords : Al1100/B 4 C Composite, Transient Liquid Phase, Interlayer, Isothermal Solidification, CuAl 2 Particles, Dissimilar Joint.
