A study of processing and high-temperature sliding wear behaviour of Inconel-625 alloy TIG weld cladding Online publication date: Tue, 30-Aug-2022
by Neeraj Kamboj; Lalit Thakur
International Journal of Materials Engineering Innovation (IJMATEI), Vol. 13, No. 3, 2022
Abstract: A clad layer of Inconel-625 alloy was successfully deposited on the surface of AISI-304 stainless steel substrate using the tungsten inert gas welding process. Claddings of similar composition were deposited under varying welding currents and scanning speeds, and their characterisation was performed using SEM, EDS, and XRD techniques. Pin-on-disc wear testing was performed at the ambient temperature and 650°C. The result showed that cladding with low heat input possessed better wear resistance at both temperatures than the cladding developed at high heat input. The wear test revealed that the weight loss in cladding at ambient temperature was mainly observed due to the abrasive wear, whereas the adhesive wear was dominant at high temperatures. The result revealed that the Inconel-625 clad layer developed at low heat input exhibited lesser dilution, and higher retained elements produced the strengthening effects, which resulted in the cladding with higher microhardness and lesser amount of wear.
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