Abstract
The Experimental work was done to investigate the role of pitting corrosion resistance as well as impact toughness behavior of gas tungsten arc welded martensitic stainless steel (AISI 410SS) joints. In this study 6 mm thick cold rolled AISI 410 stainless steel plates were utilized as a base plate. The welding was accomplished by using three different filler materials (Inconel 625, AISI 316 SS, and AISI 410 SS). The effect of post weld heat treatment (PWHT) and different filler materials on the pitting corrosion resistance, impact strength, and metallurgical performance of the GTA welded plates was investigated. The analysis for pitting and impact was studied in two circumstances first in as-received situation and second in PWHT situation.The outcomes formulated from research work indicates that the filler material composition induces the significant variation in the impact toughness along with pitting corrosion resistance of the experimental specimens. The minimum mass loss (1.3818 mg) of Inconel 625 filler welded joint indicates that the maximum resistance of the tested samples against the pitting corrosion. Furthermore, the PWHT helps to enhance the pitting resistance. The maximum impact toughness (average CVN 121.5 J) shown by (WJ-2P) in PWHT condition. The experimental study indicates that the Inconel 625 filler material helps to improve the pitting resistance and impact toughness of the welded specimens in as-received along with PWHT condition.
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