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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
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Universitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Fiabilitat i Micromecànica dels Materials
dc.contributor.author
Tarragó Cifre, Jose María
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Dorvlo, Selassie
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Al-Dawery, Ihsan
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Llanes Pitarch, Luis Miguel
dc.identifier
Tarrago, J., Dorvlo, S., Al-Dawery, I., Llanes, L. Strength degradation of cemented carbides due to thermal shock. A: European Congress and Exhibition on Powder Metallurgy. "Proceedings of the Euro PM2015 Congress & Exhibition". Reims: 2015.
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https://hdl.handle.net/2117/82284
dc.description.abstract
Despite the recognition of thermal shock and thermal fatigue as common failure modes in cemented carbide applications, the information on the influence of the microstructure on the resistance of hardmetals to abrupt temperature changes is rather scarce. In this paper, the strength behaviour of cemented carbides after severe thermal shock damage is investigated. In doing so, cemented carbides were subjected to thermal shock at two temperature ranges (¿T of 400ºC and 550ºC) and their retained strength evaluated as a measure of their thermal shock resistance. Residual strength results are then related to crack initiation (R) and propagation (R’’’’) Hasselman parameters. Results indicate that the finer the microstructure, the better the resistance to the nucleation of thermal shock damage of hardmetals. This strength trend is in accordance with higher R and lower R’’’’ parameters for the studied materials.
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Peer Reviewed
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Postprint (author's final draft)
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application/pdf
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http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject
Àrees temàtiques de la UPC::Enginyeria dels materials
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Cement composites
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Cemented carbides
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Residual strength
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Hasselman parameters
dc.title
Strength degradation of cemented carbides due to thermal shock
dc.type
Conference lecture