Effect of Substituting Ni by N on Corrosion Behavior of Stainless Steel | ||||
International Journal of Materials Technology and Innovation | ||||
Article 8, Volume 2, Issue 1, April 2022, Page 51-59 PDF (696.87 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ijmti.2022.80770.1033 | ||||
View on SCiNiTO | ||||
Authors | ||||
S. Ghali ; W. Ghanem; H. El Faramawy; M. Eissa; M. Lamie | ||||
Central Metallurgical Research and Development Institute, P.O. Box 87 Helwan, Cairo, Egypt | ||||
Abstract | ||||
This article aims at investigating the influence of partial and total replacement of Ni by N in the chemical composition of the exhausted valve steel grade X45CrNiW18-9 on its corrosion behavior. Five experiments were designed. Melting was carried out in an induction furnace with a capacity of 10 Kg under nitrogen pressure. The chemical compositions of produced stainless steels were determined. The produced stainless-steel grades were forged by using free forging. The nitrogen content of each steel grade was determined. Samples of forged stainless-steel grades were subjected to heat treatment at 1050 °C for one hour and then water quenched. Microstructures of heat-treated stainless-steel grades were investigated. The influence of substituting Ni by N on the corrosion behavior of five grades of steel was studied using different concentrations of NaCl-FeCl3 solutions. SEM was used to examine the morphology of the corroded surfaces after the potentiodynamic polarization experiments. | ||||
Keywords | ||||
Austenitic Stainless Steel; NaCl; FeCl3; Nitrogen; Nickel | ||||
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