Sigma Phase Effect on Pitting Corrosion of Super Duplex Stainless Steel UNS S32750
DOI:
https://doi.org/10.31315/jmept.v4i1.10179Keywords:
super duplex stainless steel, ketahanan korosi, mikrostruktur, sigma phaseAbstract
The welding process on Super Duplex Stainless Steel material can cause decreased corrosion resistance of Super Duplex Stainless Steel material. This process occurs a lot in the heat treatment process piping and pipeline. This decrease in corrosion resistance occurs due to the formation of sigma phase precipitation due to heat treatment of the metal. This research will determine the relationship between the ratio of heat input cold pass: the ratio of heat input root pass to the percentage of sigma phase and the relationship between the percentage of sigma phase to the weight loss value. accompanied by the formation of pitting corrosion on UNS S32750 Super Duplex Steel. Test Coupon (TC) specimens obtained from as-welded with the ratio of heat input cold pass : ratio of heat input root pass (TC-1=74%; TC-2=70%; TC-3=68%; TC- 4=61 %) which was then tested for microstructure. The percentage of sigma phase obtained is TC-1 = 13.96%, TC-2 = 8.33%, TC-3 = 8.33%, and TC-4 = 4.38%). The corrosion resistance test yielded weight loss values (TC-1 = 14.67 gr/m2, TC-2 = 11.71 gr/m2, TC-3 = 1.27 gr/m2, and TC-4 = 2.71 gr/m2). This study concludes that the formation of the sigma phase will be directly proportional to the value of the root pass heat input ratio: the cold pass heat input ratio. The higher the percentage of sigma phase, the higher the weight loss value in the corrosion test, which will cause pitting corrosion.
References
Amatsuka, S., Nishimoto, M., Muto, I., Kawamori, M., Takara, Y., & Sugawara, Y. (2023). Micro-electrochemical insights into pit initiation site on aged UNS S32750 super duplex stainless steel. Npj Materials Degradation, 7(1). https://doi.org/10.1038/s41529-023-00335-8
Arun, D., Devendranath Ramkumar, K., & Vimala, R. (2019). Multi-pass arc welding techniques of 12 mm thick super-duplex stainless steel. Journal of Materials Processing Technology, 271(December 2018), 126–143. https://doi.org/10.1016/j.jmatprotec.2019.03.031
ASTM. (2003). Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride. ASTM G-48, July, 1–10. https://doi.org/10.1520/G0048-11.responsibility
Bashari R Roszardi1), Rini Riastuti1), Wahyu Budiarto1), Nono Darsono2), A. N. S. (2022). Nusantara : Jurnal Ilmu Pengetahuan Sosial Corrosion Behavior Of Super Austenitic Stainless Steel ,. 9(1), 85–91.
Chan, K. W., & Tjong, S. C. (2014). Effect of secondary phase precipitation on the corrosion behavior of duplex stainless steels. Materials, 7(7), 5268–5304.
Da Fonseca, G. S., De Oliveira, P. M., Diniz, M. G., Bubnoff, D. V., & De Castro, J. A. (2017). Sigma phase in superduplex stainless steel: Formation, kinetics and microstructural path. Materials Research, 20(1), 249–255.
Department, C. R. A. R. (2019). Duplex Stainless Steels Welding Guidelines. https://industeel.arcelormittal.com/wp-content/uploads/2019/06/Duplex-Stainless-Steels-Welding-Guidelines-EN-Juin-2019-Web.pdf
Giorjão, R. A. R., Pereira, V. F., Terada, M., Fonseca, E. B. Da, Marinho, R. R., Garcia, D. M., & Tschiptschin, A. P. (2019). Microstructure and mechanical properties of friction stir welded 8 mm pipe SAF 2507 super duplex stainless steel. Journal of Materials Research and Technology, 8(1), 243–249. https://doi.org/10.1016/j.jmrt.2018.01.002
Hosseini, V. A., Karlsson, L., Wessman, S., & Fuertes, N. (2018). Effect of sigma phase morphology on the degradation of properties in a super duplex stainless steel. Materials, 11(6). https://doi.org/10.3390/ma11060933
Koli, Y., Roy, J. G., Yuvaraj, N., Vipin, & Vedabouriswaran, G. (2023). Microstructural Evolution, Ferrite Content, and Grain Size Study in the Coalescence of High Nitrogen Austenitic Stainless Steel Thick Plates Using Cold Metal Transfer Welding Process. Journal of Materials Engineering and Performance. https://doi.org/10.1007/s11665-023-08247-z
Liu, C., Wang, A., Wang, H., & Xie, J. (2022). Effect of Solution Treatment Temperature on Microstructure, Mechanical Properties, and Corrosion Resistance of 5A Super Duplex Stainless Steel. Journal of Materials Engineering and Performance. https://doi.org/10.1007/s11665-022-07576-9
Monier, R. (2019). Heat affected zone ferrite content control of a new duplex stainless steel grade with enhanced weldability. ArcelorMittal, Global R&D Le Creusot - Industeel, 0, 71201.
Olsson, J., & Snis, M. (2007). Duplex - A new generation of stainless steels for desalination plants. Desalination, 205(1–3), 104–113.
Paulraj, P., & Garg, R. (2016). Effect of welding parameters on pitting behavior of GTAW of DSS and super DSS weldments. Engineering Science and Technology, an International Journal, 19(2), 1076–1083. https://doi.org/10.1016/j.jestch.2016.01.013
Ramkumar, K. D., Thiruvengatam, G., Sudharsan, S. P., Mishra, D., N, A., & Sridhar, R. (2014). Characterization of weld strength and impact toughness in the multi-pass welding of super-duplex stainless steel UNS 32750. Materials & Design, 60, 125–135. https://doi.org/10.1016/j.matdes.2014.03.031
Reis, G. S., Jorge Jr., A. M., & Balancin, O. (2000). Influence of the microstructure of duplex stainless steels on their failure characteristics during hot deformation. Materials Research, 3(2), 31–35. http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392000000200006&lng=pt&nrm=iso&tlng=pt
Shen, W., Wang, F., Yang, Z., Sun, L., Li, Y., & Jin, J. (2021). Effect of Ferrite Proportion and Precipitates on Dual-Phase Corrosion of S32750 Super Duplex Stainless Steel with Different Annealing Temperatures. Steel Research International, 92(6), 1–9. https://doi.org/10.1002/srin.202000568
Shin, Y. T., Shin, H. S., & Lee, H. W. (2012). Effects of heat input on pitting corrosion in super duplex stainless steel weld metals. Metals and Materials International, 18(6), 1037–1040. https://doi.org/10.1007/s12540-012-6017-0
Zhang, Z., Zhao, H., Zhang, H., Hu, J., & Jin, J. (2017). Microstructure evolution and pitting corrosion behavior of UNS S32750 super duplex stainless steel welds after short-time heat treatment. Corrosion Science, 121, 22–31. https://doi.org/10.1016/j.corsci.2017.02.006
Zucato, I., Moreira, M. C., Machado, I. F., & Lebrão, S. M. G. (2002). Microstructural Characterization and the Effect of Phase Transformations on Toughness of the UNS S31803 Duplex Stainless Steel Aged Treated at 850 °C. Materials Research, 5(3), 385–389. https://doi.org/10.1590/s1516-14392002000300026
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