Diffusion bonding of low carbon steel and pure zirconium with Cu-base amorphous interlayer

A composite plate of low carbon steel and pure zirconium was fabricated by diffusion bonding with Cu-base amorphous interlayer at a temperature of 700 °C and pressure of 3 MPa. The effect of interlayer thickness on the microstructure and properties of the composite plate were investigated. The results show that all the samples produced with various interlayer thicknesses are composed of the reaction layer (RL) with a multilayer structure. Two dendritic structures are observed in the RL with 90 μm thick interlayer. The maximum shear strength across the composite plate and the displacement is 88 MPa and 0.33 mm, respectively. The maximum bending strength and strain of the composite plate reaches 1079 MPa and 47.6%, respectively.