Abstract
Cladding through GMAW can be done on surfaces of components and structures exposed to corrosive environment to raise their service life. Corrosion resistant materials are clad up on to a corrosion prone material up to a desired thickness. Since clad materials are basically of different compositions, they are dissimilar in nature. In the present work, cladding of austenitic stainless steel (316) is done on to low alloy steel specimens under varying parametric combinations. Clad quality including metallography is studied on clad specimens at different locations of it. Corrosion tests performed on clad specimens show substantially less corrosion pits present on the surface of clad portions than that on the surface of unclad portion. At a weld voltage of 26 V, weld current of 145 A, and weld speed of 535.8 mm/min, with a heat input of 0.338 kJ/mm, corrosion rate is observed to be the minimum among the experiments conducted, and hence, can be recommended to adopt.
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