High temperature oxidation resistance and microstructure of laser-shock peened Ti-Beta-21S

Article dans une revue avec comité de lecture
Auteur
LAVISSE, Luc
496957 Laboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
KANJER, Armand
496957 Laboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
BERGER, P.
419361 Université Paris-Saclay
OPTASANU, V.
496957 Laboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
GORNY, Cyril
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccPEYRE, Patrice
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
MONTESIN, T.
496957 Laboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
MARCO DE LUCAS, M.C.
496957 Laboratoire Interdisciplinaire Carnot de Bourgogne [ICB]

URI
http://hdl.handle.net/10985/19220
DOI
10.1016/j.surfcoat.2020.126368
Date
2020
Journal
Surface and Coatings Technology

Résumé

Improving the high temperature (HT) resistance of titanium alloys is currently a technological challenge for extending their use in aerospace engines. Ti-Beta-21S is a metastable β titanium alloy specifically designed for high temperature applications up to 593 °C. We report the effect of a surface treatment by laser-shock peening (LSP) on the high temperature behavior of Ti-Beta-21S in order to increase further its maximum service temperature. The oxidation kinetics at 700 °C for duration up to 3000 h showed that the LSP treatment increases the oxidation resistance of Ti-Beta-21S. The effects of the LSP treatment on the alloy microstructure, its evolution at high temperature and the diffusion of light atmospheric elements (oxygen and nitrogen) are also reported.

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