Investigation and characterization of microwave processed joint of MS1020

Abstract

Microwave welding is the special processes of joining materials with the help of electromagnetic waves. It is really more challenging than other welding processes, because metals generally reflect electromagnetic waves at ordinary conditions. This paper blends metallic content (Mild Steel) with a household oven with frequency of 2.45 GHz and strength 900 W. Microwave radiations is intended for joining two mild steel plates by applying Nickel paste as an interfacing material of an ordinary thickness of 0.2 mm between the surfaces. The joints are distinguished by X-ray diffraction (XRD) analysis, optical microstructural analysis, tensile power, percentage elongation and Vickers microhardness. The microstructure analysis clearly indicates the full melting of the interfacing powder with bonding between the two substrates with less porosity present at the joints. XRD is responsible for the development of Fe3C and Fe3Si processes. The microhardness, tensile strength & percent elongation of the joint are 180 Hv, 247.2 MPa and 5.04% respectively.