A study on corrosion resistance of dissimilar welds between Monel 400 and 316L austenitic stainless steel

International Conference on Recent Advances in Materials & Manufacturing Technologies

Mani, Cherish^1 ; Karthikeyan, R.^1 ; Vincent, S.^1

Department of Mechanical Engineering BITS PILANI, Dubai Campus, Dubai, United Arab Emirates^1

关键词: 316 L stainless steel;    316L austenitic stainless steel;    Industrial environments;    Monel 400;    Post weld heat treatment;    Potentiodynamic methods;    Potentiodynamic technique;    Stainless steel 316;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/346/1/012025/pdf
DOI  :  10.1088/1757-899X/346/1/012025

来源: IOP

【 摘 要 】

An attempt has been made to study the corrosion resistance of bi-metal weld joints of Monel 400 tube to stainless steel 316 tube by GTAW process. The present research paper contributes to the ongoing research work on the use of Monel400 and 316L austenitic stainless steel in industrial environments. Potentiodynamic method is used to investigate the corrosion behavior of Monel 400 and 316L austenitic stainless steel welded joints. The analysis has been performed on the base metal, heat affected zone and weld zone after post weld heat treatment. Optical microscopy was also performed to correlate the results. The heat affected zone of Monel 400 alloy seems to have the lowest corrosion resistance whereas 316L stainless steel base metal has the highest corrosion resistance.