Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma
In this monograph, a comparative study regarding to the microstructural changes and engineering applications of martensitic stainless steels treated by nitriding and plasma carburizing reported in the literature is carried out. The changes in the microstructure and the chemical composition of the st...
- Autores:
-
Puche Ojeda, Carlos Daniel
- Tipo de recurso:
- Trabajo de grado de pregrado
- Fecha de publicación:
- 2021
- Institución:
- Universidad de Córdoba
- Repositorio:
- Repositorio Institucional Unicórdoba
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unicordoba.edu.co:ucordoba/4569
- Acceso en línea:
- https://repositorio.unicordoba.edu.co/handle/ucordoba/4569
- Palabra clave:
- Microestructura
Martensita expandida
Cementación a plasma
Nitruración a plasma
Microstructure
Expanded martensite
Plasma carburizing
Plasma nitriding
- Rights
- openAccess
- License
- Copyright Universidad de Córdoba, 2021
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dc.title.spa.fl_str_mv |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma |
title |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma |
spellingShingle |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma Microestructura Martensita expandida Cementación a plasma Nitruración a plasma Microstructure Expanded martensite Plasma carburizing Plasma nitriding |
title_short |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma |
title_full |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma |
title_fullStr |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma |
title_full_unstemmed |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma |
title_sort |
Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma |
dc.creator.fl_str_mv |
Puche Ojeda, Carlos Daniel |
dc.contributor.advisor.spa.fl_str_mv |
Espitia Sanjuán, Luis Armando |
dc.contributor.author.none.fl_str_mv |
Puche Ojeda, Carlos Daniel |
dc.subject.proposal.spa.fl_str_mv |
Microestructura Martensita expandida Cementación a plasma Nitruración a plasma |
topic |
Microestructura Martensita expandida Cementación a plasma Nitruración a plasma Microstructure Expanded martensite Plasma carburizing Plasma nitriding |
dc.subject.keywords.eng.fl_str_mv |
Microstructure Expanded martensite Plasma carburizing Plasma nitriding |
description |
In this monograph, a comparative study regarding to the microstructural changes and engineering applications of martensitic stainless steels treated by nitriding and plasma carburizing reported in the literature is carried out. The changes in the microstructure and the chemical composition of the steels achieved by these thermochemical treatments are discussed by means of material characterization techniques, such as: optical microscopy, scanning electron microscopy, X-ray diffraction, optical emission spectroscopy of luminescent discharge, among others. It was found that these nitrided and carburized martensitic stainless steels are mainly used for wear resistance and corrosion resistance applications. Keywords: Microstructure, Expanded Martensite, Plasma Carburizing, Plasma Nitriding 13 INTRODUCCI |
publishDate |
2021 |
dc.date.accessioned.none.fl_str_mv |
2021-09-25T23:19:05Z |
dc.date.available.none.fl_str_mv |
2021-09-25T23:19:05Z |
dc.date.issued.none.fl_str_mv |
2021-09-24 |
dc.type.spa.fl_str_mv |
Trabajo de grado - Pregrado |
dc.type.coarversion.fl_str_mv |
http://purl.org/coar/version/c_71e4c1898caa6e32 |
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http://purl.org/coar/resource_type/c_7a1f |
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https://repositorio.unicordoba.edu.co/handle/ucordoba/4569 |
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https://repositorio.unicordoba.edu.co/handle/ucordoba/4569 |
dc.language.iso.spa.fl_str_mv |
spa |
language |
spa |
dc.rights.spa.fl_str_mv |
Copyright Universidad de Córdoba, 2021 |
dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
dc.rights.uri.spa.fl_str_mv |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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info:eu-repo/semantics/openAccess |
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Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) |
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Copyright Universidad de Córdoba, 2021 https://creativecommons.org/licenses/by-nc-nd/4.0/ Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
dc.publisher.faculty.spa.fl_str_mv |
Facultad de Ingeniería |
dc.publisher.place.spa.fl_str_mv |
Montería, Córdoba, Colombia |
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Ingeniería Mecánica |
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Universidad de Córdoba |
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Espitia Sanjuán, Luis Armandoccd700ea-3e81-485b-a238-dec8acd0a515-1Puche Ojeda, Carlos Daniel4e7e7ea5-b625-457f-98de-9d7f38a79904-12021-09-25T23:19:05Z2021-09-25T23:19:05Z2021-09-24https://repositorio.unicordoba.edu.co/handle/ucordoba/4569In this monograph, a comparative study regarding to the microstructural changes and engineering applications of martensitic stainless steels treated by nitriding and plasma carburizing reported in the literature is carried out. The changes in the microstructure and the chemical composition of the steels achieved by these thermochemical treatments are discussed by means of material characterization techniques, such as: optical microscopy, scanning electron microscopy, X-ray diffraction, optical emission spectroscopy of luminescent discharge, among others. It was found that these nitrided and carburized martensitic stainless steels are mainly used for wear resistance and corrosion resistance applications. Keywords: Microstructure, Expanded Martensite, Plasma Carburizing, Plasma Nitriding 13 INTRODUCCIRESUMEN ............................................................................................................................... 12ABSTRACT ............................................................................................................................. 12INTRODUCCIÓN ................................................................................................................... 131.TRATAMIENTOS TERMOQUÍMICOS ............................................................................. 141.1 CEMENTACIÓN ........................................................................................................... 151.1.1 Cementación Líquida .............................................................................................. 151.1.2 Cementación al vacío .............................................................................................. 161.1.3 Cementación gaseosa .............................................................................................. 161.1.4 Cementación por Paquete ........................................................................................ 171.1.5 Cementación a plasma ............................................................................................. 171.2 NITRURACIÓN ............................................................................................................ 181.2.1 Nitruración Líquida ................................................................................................. 191.2.2 Nitruración gaseosa ................................................................................................. 191.2.3 Nitruración a plasma ............................................................................................... 192. CARACTERISTICAS DEL PROCESO DE DESCARGA LUMINISCENTE .................. 212.1 CONCEPTO DEL PLASMA ......................................................................................... 212.2 DESCARGA LUMINISCENTE .................................................................................... 223. ACEROS INOXIDABLES .................................................................................................. 244. FASES PRESENTES EN ACEROS NITRURADOS Y CEMENTADOS ........................ 284.1 RESULTADOS DE NITRURACIÓN Y CEMENTACIÓN POR PLASMA PARA ACEROS INOXIDABLES MARTENSÍTICOS ................................................................. 284.2 MICROESTRUCTURA, CARACTERIZACIÓN Y APLICACIONES DE ACEROS INOXIDABLES MARTENSÍTICOS NITRURADOS POR PLASMA ............................. 294.3 MICROESTRUCTURA, CARACTERIZACIÓN Y APLICACIONES DE ACEROS INOXIDABLES MARTENSÍTICOS CEMENTADOS POR PLASMA ............................ 505. RESUMEN DE LOS RESULTADOS ................................................................................. 62CONCLUSIONES ................................................................................................................... 63REFERENCIAS ....................................................................................................................... 65En la presente monografía se realiza un estudio comparativo sobre los cambios en la microestructura y las aplicaciones en ingeniería de aceros inoxidables martensíticos tratados por nitruración y cementación a plasma reportados en la literatura. Los cambios en la microestructura y en la composición química de los aceros a partir de estos tratamientos termoquímicos son discutidos a través de técnicas de caracterización de materiales, como son: microscopia óptica, microscopía electrónica de barrido, difracción de rayos X, espectroscopía de emisión óptica de descarga luminiscente, entre otras. Se encontró que estos aceros inoxidables martensíticos nitrurados y cementados a plasma son empleados principalmente en aplicaciones de resistencia al desgaste y resistencia a corrosión.PregradoIngeniero(a) Mecánico(a)Monografíasapplication/pdfspaCopyright Universidad de Córdoba, 2021https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)http://purl.org/coar/access_right/c_abf2Microestructura y aplicaciones de aceros inoxidables martensíticos tratados por nitruración y cementación a plasmaTrabajo de grado - Pregradoinfo:eu-repo/semantics/bachelorThesishttp://purl.org/coar/resource_type/c_7a1fTexthttps://purl.org/redcol/resource_type/TPhttp://purl.org/coar/version/c_71e4c1898caa6e32MicroestructuraMartensita expandidaCementación a plasmaNitruración a plasmaMicrostructureExpanded martensitePlasma carburizingPlasma nitridingFacultad de IngenieríaMontería, Córdoba, ColombiaIngeniería MecánicaAbdelrahman, F., & Tatsuhiko , A. (2017). Phase Transformation Induced by High Nitrogen Content Solid Solution. Materials Transactions, 687-700.Aghajani, H., & Behrangi, S. (2017). Plasma Nitriding of Steels. Springer.Angelini, V., Boromei, I., Martini, C., Scheuer, C. J., Cardoso, R. P., Brunatto, S. F., & Ceschini, L. (2016). Dry sliding behavior (block-on-ringtests) of AISI 420 martensitic stainless steel,surface hardened by low temperature plasma-assisted carburizing. Tribology international, 555-565.Askeland, D. R., & Wright, W. J. (2016). The science and engineering of materials. Cengage Learning.Belzunce, F. J. (2001). Aceros y Fundiciones: Estructuras, Transformaciones, Tratamientos Térmicos y Aplicaciones. Universidad de Oviedo.Berns, H., Gavriljuk, V., & Riedner, S. (2013). High Interstitial Stainless Austenitic Steels. Springer.Blaszques Martinez, V. M., Lorenzo Esteban, V., & Del rio Lopez, B. (2014). Ingeniería y ciencia de los materiales metálicos. Dextra.Brunatto, S. F., Scheuer, C. J., & Cardoso, R. P. (2012). Low-temperature plasma carburizing of AISI 420 martensitic stainless steel: Influence of gas mixture and gas flow rate. Surface and Coatings Technology, 5085-5090.Brunatto, S. F., Scheuer, C. J., Boromei, L., Martini, C., Ceschini, L., & Cardoso, A. P. (2018). Martensite coarsening in low-temperature plasma carburizing. Surface and Coatings Technology, 161-171.Brunatto, S. F., & Cardoso, R. P. (2019). influência do tempo de pulso na cementação assistida por plasma. 10 COBEF Congresso Brasileiro de Engenharia de Fabricacao.Buhagiar, J. (2010). Surface modification technologies. 25 years of S-phase. Maney on behalf of the Institute, 229-232.Callister, W. D., & Rethwish, D. G. (2017). Materials Science and Engineering An Introduction, 10th Edition. Willey.Chapman, B. (1980). Glow discharge processes. Jhon Willey and sons.Cordova Valencia, S. (2003). Proceso de nitruración gaseosa en los aceros SAE 4340, SAE 4140, SAE 0-1, SAE 1045. Universidad Nacional de San Marcos.Corengia, P., Walther, F., Ybarra, G., Sommadossi, S., Corbari, R., & Broitman, E. (2005). Friction and rolling–sliding wear of DC-pulsed plasma nitrided AISI 410 martensitic stainless steel. Wear, 479-485.Czerwinski, F. (2012). Heat treatment conventional and novel applications.Davids, J. R. (2002). Surface Hardening of Steels understanding the basics. Asm International.Erkens, G., Vetter, J., Muller, J., & Brinke, T. a. (2010). Erkens. Sulzer Metaplas Gmbh.Espitia Sanjuan, L. A. (2015). Cavitation erosion resistance and wea rmechanisms of active screen low temperature plasma nitrided AISI 410 martensitic stainless steel. Universidad de São Paulo.Espitia, L. A., Hanshan, D., Xiao-Ying, L., Pinedo, C. E., & Tschiptschin, A. P. (2017). Scratch test of active screen low temperature plasma nitrided AISI 410. Wear, 30-36.Gómez Gordo, A., & Martin piris, N. (2012). Ciencia de materiales para ingenieros. Prentice Hall.Groover, M. P. (2019). Fundamentals of modern manufacturing materials, procesesses and systems. WIlley.Hongyu , S., & Liang , W. (2020). Mechanism and properties of plasma nitriding AISI 420 stainless steel at low. Surface and Coatings Techonology, 403-411.Hosmani, S. S., Kuppusami, P., & Kumar Goyal, R. (2014). An Introduction to surface Alloying of metals. Springer.Insup, L. (2017). Combination of Plasma Nitriding and Nitrocarburizing Treatments of AISI 630 martensitic precipitation hardening stainless steel. Surface and Coatings Techonology.Kalpakijan, S., & Schmid, S. R. (2014). Manufacturing engineering and technology. Pearson.Kim, S. K., Yoo , J. S., Priest , J. M., & Fewell, M. P. (2003). Characteristics of Martensitic Stainless Steel Nitrided in Low-pressure RF Plasma. Surface and Coating Technology, 380-385.Kovacı, H., & Seçer, Y. (2020). Improved tribological performance of AISI 316L stainless steel by acombined surface treatment: Surface texturing by selective laser melting and plasma nitriding. Surface and Coatings Techonology.Kulka, M. (2019). Currents Trends in Boriding Techiques. Springer.Kumar Dwivedi, D. (2018). Surface engineering Enhancing Life of Tribological Components. Springer.Leyland, A., Lewis, D. B., Stevenson, P. R., & Mat. (1993). Low temperature plasma diffusion treatment of stainless steels for improved wear resistance. Surface and Coatings Technology, 608-617.Li, C. X., & Bell, T. (2006). Corrosion properties of plasma nitrided AISI 410 martensitic stainless steel in 3.5% NaCl and 1% HCl aqueous solutions. Corrosion Science, 2036-2049.Liua, R. L., Fuyao , Y., Wei, C. Y., & Yan, M. F. (2019). Characteristics of carbon-expanded α phase layer on AISI 431 stainless steel using experimental and fist-principles calculation methods. Surface and Coatings Technology, 66-73.Mangonon, P. L. (2011). Ciencia de los materiales selección y diseño. Prentice Hall.Materials, A. S. (1992). ASM Handbook Vol 4 Heat Treating. Asm InternationalMittemeijer, E. J., & Somers, M. A. (2015). Thermochemical surface engineering of steels. El servier.Perez Patiño, J. A. (1996). Opcion al grado de maestro tratamientos termicos de los aceros. Universidad Autonoma de Leon.Pero-Sanz Elorz, J. A., Gonzales, D. F., & Verdeja. (2019). Structural Materials properties and selection. Springer.Prabhudeva, K. H. (1988). Handbook of heat treatments of steels. MC Graw Hill.Pye, D. (2003). Practical nitriding and Ferritic Nitrocarburizing. Asm International.Radhakanta. (2021). High-Performance Ferruos Alloys. Springer.Reardon, A. C. (2011). Metallurgy for the non metallurgist. Asm International.Rovani, A. C., Breganon, R., De Souzab, G. S., Brunatto, S. F., & Pintaúde, G. (2017). Scratch resistance of low-temperature plasma nitrided and carburized martensitic stainless steel. Wear, 70-76.Scheuer , C. J., Possoli , F. A., Borge, P. C., Cardoso, R. P., & Brunatto, S. F. (2019). AISI 420 martensitic stainless steel corrosion resistance enhancement by low-temperature plasma carburizing. Electrochemica Acta, 70-82.Scheuer, C. J., Cardoso, R. P., & Brunatto, S. F. (2021). Sequential low-temperature plasma-assisted thermochemical treatments of the AISI 420 martensitic stainless steel. Surface and Coatings Techonology.Shackelford, J. F. (2016). Introduction to materials science for engineers. Pearson.Smitch, W. F., & Hashemi, J. (2019). Foundations of materials science and engineering. Mc Graw Hill.Totten, G. E., & Dossett, J. L. (2013). ASM Handbook Volume 4ª Steel Heat Treating Fundamentals and Processes. Asm International.Ullah Khan, R. (2008). Vacuum Gas Carburizing-Fate of hydrocarbons. Universitatsverlag Kalsruhe.Umemuraa, M. T., Varela, L. B., Pinedo, C. E., Cozza, R. C., & Tschiptschin, A. P. (2019). Assessment of tribological properties of plasma nitrided 410S ferritic-martensitic stainless steels. Wear, 49-58.Warlimont, H., & Martienssen, W. (2018). Springer Handbook of Materials Data. Springer. Xu, Z., & Xiong, F. F. (2017). Plasma surface metallurgy With Double Glow Discharge Technology. Springer.Yang, L., Yongyong, H., JunJie , X., Wang, W., YiJie , Z., & Baoguo, H. (2017). Wear and corrosion properties of AISI 420 martensitic stainless steel treated by active screen plasma nitriding. 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