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"Characterization of Corrosion Product of Warm Deformed 316LN Steel", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 1, page no.374-380, January-2021, Available :http://www.jetir.org/papers/JETIR2101051.pdf

• Viranshu Kumar
• Manohar kumar singh

The materials used for this investigation was austenitic stainless steel of grade 316LN. Specimens were placed in simulated primary water environment after deformation. The corrosion behaviour was investigated using OCP and EIS tests. After corrosion tests metallographic examinations were performed using scanning electron microscope also characterization of corrosion product was done by XRD and Raman spectroscopy. The EIS curve shows that the rate of corrosion increasers after 50% deformation due to the destruction of protective oxide film of chromium. XRD results showed the presence of ϒ-Fe2O3, α-FeOOH and ϒ- FeOOH which is responsible for the formation of passive layer on the surface of specimen. It is evident from the diffractograms that the rust of steel 316LN invariably exhibit very strong peaks of α-FeOOH (goethite) and γ -Fe2O3 (maghemite) in test solutions. It is seen from the Raman shifts recorded, the majority of peaks are attributed to α-FeOOH (goethite) and γ -Fe2O3 (maghemite). In contrast to this, the rusts formed on 50% deformed samples are mostly γ -FeOOH (lepidocrocite).

Austenitic stainless steel, corrosion, scanning electron microscope, deformation.

"Characterization of Corrosion Product of Warm Deformed 316LN Steel", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 1, page no. pp374-380, January-2021, Available at : http://www.jetir.org/papers/JETIR2101051.pdf