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Effect of Hot Corrosion Demeanour on Aerospace-Grade Hastelloy X Made by Pulsed and Constant Current Arc Welding in Molten Salt at 820 °C

Publication Type : Conference Proceedings

Publisher : IOP Conference Series: Materials Science and Engineering

Source : Material Science and Engineering, IOP Conference Series: Materials Science and Engineering, Volume 912 Pg. no. 032060, 2020

Url : https://research.vit.ac.in/publication/effect-of-hot-corrosion-demeanour-on-aerospace-grade-hastelloy

Campus : Chennai

School : School of Engineering

Center : Research & Projects

Department : Mechanical Engineering

Year : 2020

Abstract : The effect of hot corrosion tendency of Hastelloy X weldment made by pulsed current tungsten inert gas (PCTIG) and constant current tungsten inert gas (CCTIG) welding has been studied. The welding has been done using ERNiCrCoMo-1 (Mo-1) filler. The hot corrosion demeanour of the Hastelloy X has studied in two different molten salt circumstance such as MS-1 (molten salt-1) (75Na2SO4 + 20V2O5 + 5NaCl) and MS-2 (molten salt-2) (75Na2SO4 + 25V2O5) for 25 cycles (one hour in each cycle) at 820 C. The MS-1 substrate shows the maximum weight gain compared to MS-2. Also, the largest parabolic constant (Kp) is observed for PCTIG MS-1. The existence of NaCl in MS-1 has improved the corrosion rate by generating more spallation and exfoliation on the surface. The trends of hot corrosion resistance are following the order of, CCTIG Mo-1 MS-1

Cite this Research Publication : Sathishkumar M, Subramani P, Natesh M, Venkateshkannan M, Arivazhagan N, Manikandan M. “Effect of Hot Corrosion Demeanour on Aerospace-Grade Hastelloy X Made by Pulsed and Constant Current Arc Welding in Molten Salt at 820 °C”, Material Science and Engineering, IOP Conference Series: Materials Science and Engineering, Volume 912, Pg. no. 032060, 2020

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