Microstructure and Mechanical Properties of Explosive Weld Copper-Mild Steel Joint
DOI:
https://doi.org/10.22486/iwj/2018/v51/i1/166440Keywords:
Mild Steel, Copper, Explosive Weld Interface, Inter-Mixed Zone, Shear Strength.Abstract
Mild steel and copper was joined with explosive welding using suitable parameters to obtain a copper-mild steel joint of high integrity. There was no diffusion, melting and formation of intermetallic zone between the bonded plates. An inter-mixed zone of the base materials is observed with a span of 1300 μm around the interface. Significant hardening and softening of the microstructure was observed on the copper and steel sides around the interface respectively by inter-mixing effect arising out of mechanical inter-locking. Shear strength of the joint (260 MPa) was quite higher with respect to that of the copper, the weaker metal of the copper-mild steel bimetal combination. Reasonably ductile shear failure occurred in the copper plate, and no failure was observed along the interface.Downloads
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