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Published in:
2012 | OriginalPaper | Chapter
Hot Corrosion Studies on Gas Tungsten Arc Welded AISI 304 and AISI 4140 Dissimilar Joints
Authors : N. Arivazhagan, K. Devendranath Ramkumar, S. Karthikeyan, M. Manikandan, S. Narayanan, S. Surendra
Published in: Trends in Intelligent Robotics, Automation, and Manufacturing
Publisher: Springer Berlin Heidelberg
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Hot corrosion of Gas Tungsten Arc Welded (GTAW) AISI 304 and AISI 4140 dissimilar weldment exposed in air as well as molten salt environment of Na
2
SO
4
-60%V
2
O
5
and K
2
SO
4
-60% NaCl are discussed. Weight gain studies were done for composite specimens containing both weld metal and heat-affected zone. The results indicated that the specimens were more corroded in molten salt environment as compared to air oxidation. Also weld interface of the samples showed more attack than base metals.