Residual stress measurements in cold sprayed tantalum coatings

O. Bailly T. Laguionie L. Bianchi Michel Vardelle 1 Armelle Vardelle 1
1 Axe 2 : procédés de traitements de surface
SPCTS - Science des Procédés Céramiques et de Traitements de Surface
Abstract : The residual stress level in coatings is a main issue in controlling in-service deformation, spallation or cracking. Residual stress generation has been widely studied for plasma and HVOF sprayed coatings, but only scare data are available for cold sprayed coatings. This paper describes the measurement and analysis of residual stresses in tantalum cold sprayed coatings. Residual stress measurements were performed by the hole-drilling and curvature methods. The former provided a through-thickness residual stress profile in the coating while the latter was used to investigate the in-situ residual stress evolution during the deposition process. The results from both methods were consistent and showed compressive stress of 350 MPa for a tantalum coating deposited on a 3 mm thick copper substrate at 80°C.
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https://hal-unilim.archives-ouvertes.fr/hal-00943484
Contributeur : Pamela Bathias <>
Soumis le : vendredi 7 février 2014 - 16:32:56
Dernière modification le : mercredi 14 février 2018 - 16:29:30

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  • HAL Id : hal-00943484, version 1

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O. Bailly, T. Laguionie, L. Bianchi, Michel Vardelle, Armelle Vardelle. Residual stress measurements in cold sprayed tantalum coatings. Thermal Spray 2012: Proceedings of the International Thermal Spray Conference (ASM International), 2012, pp.271 - 276. ⟨hal-00943484⟩

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