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Resistencia mecánica de carburos cementados: influencia de la temperatura y la microestructura

Authors: Moyano, I; Bermejo, Raul; Salán Ballesteros, Maria Núria; Chicardi, E; Gotor Martínez, Francisco José; Llanes Pitarch, Luis Miguel; Torres Hernández, Yadir;

Resistencia mecánica de carburos cementados: influencia de la temperatura y la microestructura

Abstract

En esta investigación se ha evaluado el efecto de la temperatura en la resistencia mecánica de carburos cementados (WC-Co) con diferente camino libre medio de la fase ligante. La misma se determinó a 600°C con discos ensayados en flexión biaxial (3B3). Se determina la resistencia y el módulo de Weibull y se comparan con los valores obtenidos a temperatura ambiente. Se ha realizado un análisis fractográfico detallado para intentar discernir la naturaleza y el tamaño de los defectos que originan la rotura, así como los mecanismos responsables de ésta. Los resultados se discuten y racionalizan en el marco de la mecánica de la fractura elástica lineal, prestando atención al efecto de la temperatura y la microestructura en la fiabilidad mecánica. Adicionalmente, el número de fragmentos de las probetas rotas y la superficie de fractura macroscópica también se han relacionado con la resistencia mecánica y la tenacidad de fractura de los WC-Co investigados.

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Spain
Keywords

Materials durs, Materials compostos -- Propietats mecàniques, Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials, Temperatura, Resistencia mecánica, Estadística de Weibull, Composite materials--Mechanical properties, Carburos cementados, Materials compostos -- Propietats tèrmiques, Composite materials--Testing, :Enginyeria dels materials::Assaig de materials [Àrees temàtiques de la UPC], Composite materials--Thermal propertie, Flexión biaxial

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selected citations
These citations are derived from selected sources.
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).
BIP!Citations provided by BIP!
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.
BIP!Impulse provided by BIP!
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