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Thermo-mechanical behaviour of ceramic metal brazed assemblies

Cazajus, Vincent and Lorrain, Bernard and Welemane, Hélène and Paranthoen, Yann and Karama, Moussa Thermo-mechanical behaviour of ceramic metal brazed assemblies. (2008) Journal of Materials: Design and Applications, 222 (4). 291-297. ISSN 1464-4207

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Official URL: http://dx.doi.org/10.1243/14644207JMDA195

Abstract

This study investigates the effects of residual stresses developed during brazing on the performance of brazed ceramic metal joints. The thermal expansion gradient between ceramic and metallic materials leads to the development of such stresses during the cooling phase of the brazing process, which consequently reduce the strength of these composite structures. Here, the objective is to compare the failure behaviour of various assemblies observed during experimental tests and obtained through numerical simulations. In order to get a representation consistent with the physical mechanisms involved, these simulations must account for the brazing phase giving rise to residual stresses before applying in use solicitations to brazed joints. This paper focuses on the tensile strength of ceramic metal joints, for which two brittle failure modes (within the ceramic or at the interface) are observed during the experimental tests.

Item Type:Article
Additional Information:Proceedings of the Institution of Mechanical Engineers, Part L. The original PDF of the article can be found at : http://dx.doi.org/10.1243/14644207JMDA195
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Société des Céramiques Techniques - SCT (FRANCE)
Laboratory name:
Laboratoire Génie de Production - LGP (Tarbes, France) - Mécanique des Matériaux des Structures et Procédés
Funders:
Société des Céramiques Techniques, Bazet, France
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Deposited On:08 Jan 2013 15:25

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