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1020 AISI-SAE steel Austenitic Nitrocarburising with alcohol and triethanolamine
Nitrocarburación austenítica del acero AISI-SAE 1020 con alcoholes y trietanolamina
DOI:
https://doi.org/10.15446/ing.investig.v25n1.14615Keywords:
thermal treatment, surface treatment (en)tratamientos térmicos, tratamientos de superficie (es)
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The present work shows AISI-SAE 1020 steel’s nitrocarbide layer’s microstructure and micro-hardness profile following 4 hours at 700°C using methanol, isopropanol and triethanolamine. The steel was then hardened by quenching it in water and then tempered at 350°C for 1 hour. Its surface had been partially oxidized by heating it at 400°C for 1 hour. An example is given of other researchers analyzing microstructure and properties in steel having 0.5% C, using endothermic gas and different amounts of ammoniac.
En el presente trabajo se pueden observar la microestructura y el perfil de microdurezas de la capa nitrocarburada a 700°C durante 4 horas de un acero AISI-SAE 1020, utilizando metanol, isopropanol y trietanolamina, el cual fue sometido posteriormente a temple en agua y revenido a 350°C durante 1 hora. El acero fue calentado inicialmente a 400°C durante 1 hora para oxidar parcialmente la superficie. A manera de ejemplo, se presenta previamente un análisis de la microestructura y propiedades obtenidas por otros investigadores en un acero con 0,5% C, utilizando gas endotérmico y diferentes cantidades de amoníaco.
References
Bell T.; Kinali L.; Munstermann G., Physical Metallurgy Aspects of the Austenitic nitrocarburizing Process, Heat Treating of Metals, 1987, 2, pp. 47-51.
M. Kostelitz, C. Pavee, A. Gimier, Heat Treating Processes with Nitrogen and Methanol Based Atmospheres, J. Heat Treating, Vol 2, No. 1, 1981.
Castro A., Influencia de la nitrocarburación en las propiedades superficiales de los aceros no aleados, 1er, Encuentro Nacional de Ciencia y Tecnología de Superficies, Acabados y Recubrimientos, Simedua, 1995.
Kiessling L., The Constitution of Hardened Surfaces Produced by Low-Temperature Carbonitriding (Austenitic Nitrocarburizing), Heat Treatment of Metals, 1978,4, pp. 95-99.
Bell T., Nitrocementación Ferrítica, Conferencias del Programa Multinacional de Metalurgia de la OEA, Argentina, 1976.
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Copyright (c) 2005 Álvaro Castro P, Carlos Bohórquez
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