Processing of ceramics through microwave is well
established route, but processing metallic materials through microwave has been
a challenge. The present paper reports cladding of austenitic stainless steel
with a Inconel 718 powder, developed through microwave hybrid heating route.
The average thickness of clads was found to be nearly 1 mm. The microstructural
study revealed excellent metallurgical bonding between clad and substrate. The
clad layer is developed due to partial melting of outer layer of substrate and
partial diffusion of powder particles into the substrate. The phases developed
in clads were characterised using X-ray diffraction. Clads were further
investigated using Field emission- Scanning Electron Microscope and Elemental
Analysis. The clads developed were free from porosity and interfacial cracking.
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