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Dubos, P.-A., Zaouali, A., Jouan, P.-Y., Richard-Plouet, M., Brien, V., Gloaguen, D. & Girault, B. (2022) Flow stress improvement of a nickel multicrystal by physical vapor thin film deposition to reduce surface effects. Materials Letters: X, 14 100145. 
Added by: Richard Baschera (2022-06-09 13:37:51)   Last edited by: Richard Baschera (2022-06-09 13:38:52)
Type de référence: Article
DOI: 10.1016/j.mlblux.2022.100145
Numéro d'identification (ISBN etc.): 2590-1508
Clé BibTeX: Dubos2022
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Catégories: PCM
Mots-clés: Mechanical properties, Multicrystals, Physical vapor deposition, Work-hardening
Créateurs: Brien, Dubos, Girault, Gloaguen, Jouan, Richard-Plouet, Zaouali
Collection: Materials Letters: X
Consultations : 12/75
Indice de consultation : 9%
Indice de popularité : 2.25%
Liens URLs     https://www.scienc ... /S2590150822000254
Uniaxial tensile tests were carried out on nickel sheets containing only few grains across the thickness thus presenting a so-called multicrystalline state. Pristine sheets used as reference and substrates covered by a nickel layer deposited by physical vapor deposition (magnetron sputtering) were studied. Results attest that the surface treatment affects the plastic deformation mechanisms by playing the role of a blocking barrier to dislocation movement which leads to a significant improvement of mechanical performances. The surface restructuring of the nickel sheets is efficient to stop dislocation escape through free surfaces and allows a mechanical improvement of the well-known strong mechanical softening of the multicrystals.
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