A ni based alloy, a component, a gas turbine arrangement and...

C - Chemistry – Metallurgy – 22 – C

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C22C 19/05 (2006.01)

Patent

CA 2592027

The invention concerns a Ni based alloy suitable for single 5 crystalline, directionally solidified or polycrystalline components to be used at high temperatures. The alloy is a '/ alloy and consists of different alloying elements within defined ranges. Among other defined ranges of elements, the alloy contains Pd in a significant amount sufficient to 10 provide the alloy with an improved resistance against hydrogen embrittlement. The invention also concerns a component (13, 15) designed for use as a component (13, 15) in a high temperature environment. Furthermore, the invention concerns a gas turbine arrangement. Moreover, the invention 15 concerns the use of Pd for providing an alloy with improved resistance against hydrogen embrittlement.

La présente invention se rapporte à un alliage à base de Ni, qui permet d'utiliser des composants monocristallins, à solidification directionnelle ou polycristallins, à des températures élevées. L'alliage est un alliage ?'/ ?, et est constitué de divers éléments d'alliage, présents dans des plages de concentration définies. Parmi d'autres plages définies de concentration d'éléments, l'alliage contient une quantité de Pd suffisante pour lui conférer une résistance améliorée à la fragilisation par l'hydrogène. L'invention concerne également un composant (13, 15) destiné à servir de composant (13, 15) dans un environnement à haute température. En outre, l'invention a trait à un agencement de turbine à gaz. L'invention se rapporte aussi à l'utilisation de Pd pour conférer à un alliage une résistance améliorée à la fragilisation par l'hydrogène.

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