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The bead parameters play a vital role in determining and understanding the properties of the weld cladding in fusion welding process. This investigation aims at minimizing weld dilution and predicting the behavior of the bead parameters during weld cladding of AISI 316L (UNS 316 03) metal powder over carbon steel (ASTM A105/ IS: 2062), by plasma transferred arc (PTA) surfacing through response surface method. The data for modeling were collected from experiments conducted using a five level factorial technique. The predictions reveal that the travel speed has a phenomenal effect in increasing the penetration of the weld bead at lower level. The torch stand-off distance has a predominant effect in deciding the penetration and dilution of the weld bead during lower level while increasing welding current. The reinforcement of the weld bead reduced the dilution level with increase in the oscillation frequency and the powder feed rate.

Austenitic stainless steels are used for industrial applications due to their improved corrosion resistance properties. Their poor tribological behaviour is a barrier for their wider application under corrosion-wear conditions taking place between rolling and sliding contacts. The present work has been conducted to develop a low temperature liquid nitriding process for austenitic stainless steel claddings to impart better resistance to corrosion-wear. This work presents the results of the corrosion and wear tests performed on liquid nitrided AISI 316L stainless steel claddings. The wear tests were conducted with a Ducom pin on disc machine under rollingsliding conditions. Surface and subsurface were studied by an optical microscope. The hardness and depth of the modified layer were measured in the sectioned samples using a microhardness tester. The optical metallographic microstructures of the liquid nitrided specimens were revealed using Marbles reagent. The electrochemical behaviour of the liquid nitrided specimens was investigated with a dc anodic potentiodynamic polarisation technique.

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