SENSITIZATION AND CORROSION IN AISI 316L

Authors

Keywords:

Intergranular Corrosion, Heat Treatments

Abstract

This work studies the accelerated corrosion of AISI 316L stainless steel under exposure to a saline atmosphere for 96h. The samples were previously solution-treated at 1100°C for 1 hour and then cooled in water or air, followed by isothermal sensitization at 650°C for 6 hours. Microstructural analysis, using optical and scanning electron microscopy, revealed severe attacks at the austenitic grain boundaries, attributed to the precipitation of different types of chromium carbides and intermetallic phases, as confirmed by X-ray diffraction. Corrosion tests indicated that the air-cooled sample exhibited a higher degradation rate and mass loss, with significant advancement of intergranular corrosion, compared to the water-cooled one. These findings highlight the influence of heat treatments on susceptibility to localized corrosion.

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Published

28-01-2025

How to Cite

INÉS, M. (2025). SENSITIZATION AND CORROSION IN AISI 316L . Journal of Industrial and Mechanical Engineering, 8(15). Retrieved from http://revistas.unlz.edu.ar/ojs/index.php/riiym/article/view/137

Issue

Vol. 8 No. 15 (2024)

Section

Technical report

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Copyright (c) 2024 MARIANO INÉS

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