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Resistencia al desgaste de aceros inoxidables austeníticos metaestables

Authors: Escolà, M.; Méndez, H.; Fargas Ribas, Gemma; Fargas Ribas, Gemma;

Resistencia al desgaste de aceros inoxidables austeníticos metaestables

Abstract

Los aceros inoxidables austeníticos metaestables se caracterizan por presentar transformación de fase de austenita a martensita por deformación. Este fenómeno comporta un aumento del límite elástico, de la resistencia mecánica así como de la dureza. El objetivo de este trabajo es evaluar el comportamiento al desgaste de este tipo de aceros, concretamente del acero EN 1.4318, comercialmente conocido como AISI 301LN. Se han estudiado dos condiciones diferentes: en estado recocido, en el que la microestructura está formada por granos austeníticos y laminado en frío, donde el contenido de martensita es del 38%. Los ensayos de desgaste por deslizamiento se han llevado a cabo a temperatura ambiente, sin lubricante a diferentes niveles de carga y distancia de recorrido. Los perfiles de desgaste se han analizado mediante perfilometría, difracción de rayos-X y microscopía electrónica de barrido. Los resultados ponen de manifiesto que el acero laminado en frío presenta una resistencia al desgaste menor que el acero en estado recocido. La presencia inicial de martensita provoca un incremento de la transformación martensítica durante el ensayo de desgaste así como un menor volumen de los apilamientos y una reducción de la capa endurecida. No existen diferencias significativas entre las dos condiciones del acero estudiadas por lo que refiere a los mecanismos que se desarrollan durante el ensayo de desgaste.

Country
Spain
Related Organizations
Keywords

Strength of materials, Resistència de materials, Àrees temàtiques de la UPC::Enginyeria dels materials::Desgast de materials

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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