Abstract
Abstract This work aims to fabricate the functionally graded Inconel 600 on stainless steel 304 block using the wire arc additive manufacturing process. The main goal of this study was to additively create a built block with Inconel 600 filler wire. Inconel 600 is a very interesting material because of its resistance to non-magnetic, corrosive media, stress corrosion cracking due to chlorine ions is non-existent, outstanding mechanical properties, good weldability and high strength under a variety of temperature conditions. Inconel 600 alloy was studied in this work utilizing metal inert gas based wire arc additive manufacturing. Torch travel speed 5 mm s−1 and current 140 A. The bottom, middle and top layers of the newly developed fabricated block were mechanically and metallurgically characterized. The microstructure and texture evolution were characterized by means of optical microscopy, and scanning electron microscopy with energy dispersive X-ray spectroscopy. Mechanical characterization was done using the Vickers hardness test and tensile testing. Results reveal that the wire arc additively manufactured top portion has a crystalline structure showing better strength and hardness. The average hardness value was found to be 197.97 HV, the average ultimate tensile strength obtained was 616.22 MPa for the fabricated component.
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