A LITERATURE REVIEW OF CORROSION ON WELDING

This paper presents the extensive literature review conducted on corrosion studies carried out in various weldment used in Electronics, Medical, Automotive, Ship Building and Aerospace Industries. Corrosion are serious problems in those industries. Welding is commonly used for connecting steel components in steel bridge fabrication and construction. Welding processes change the microstructures, properties of surrounding steel and its surface texture. At different temperature of environmental conditions, the weldments is tends to corrosion which will reduce the life cycle of the weldments. Hence the detailed study on Corrosion types, Corrosion behaviour, Corrosion mechanism and metallurgical characteristics changes occurring with respect to mechanical properties at various environmental conditions in various steel grade pipes is very important in estimating the life cycle of the weldments. However, it will lead to premature failure of the components there are also many instances in which the weld exhibits corrosion resistance superior to that of the non-welded base metal. The main objective of this literature review is to gather salient information of the previously carried out research works with reference to corrosion studies, so that it will provide the strong base for carrying out experimental investigations. Through SEM images, types of corrosion, corrosion mechanism was discussed in detail in this paper.