C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
C22F 1/10 (2006.01) B23K 35/30 (2006.01) C30B 33/00 (2006.01) F01D 5/00 (2006.01)
Patent
CA 2385821
A process of brazing cracks and gaps in a single crystal article which takes place isothermally under the following conditions: the temperature of the isothermal solidification is between T Liquidus, Braze +5*(wt-%B Braze) and (T solidus, base material -70*(Wt-%B Braze)), while (wt-%B*wt-%Cr) is between 15 and 40 and (T solv .gamma. ', base material -T Liquidus, Braze) is above 140° C. This results in a homogeneous .gamma./,.gamma.'-microstructure of the isothermal solidified, brazed joint with mechanical properties similar to those of the base material.
Le présent extrait concerne un procédé de brasage de criques et espaces dans un élément en monocristal qui a lieu de façon isothermique dans les conditions suivantes : la température de la solidification isothermique est entre T Liquidus, Brasure +5*(% poids de B brasure) et (T solidus, matériau support -70*(% poids de B brasure) alors que (% poids de B*% poids de Cr) est entre 15 et 40 et (T solv .gamma. ', matériau support -T Liquidus, brasure) est au-dessus de 140 degrés C. Ceci se traduit par une microstructure homogène.gamma./gamma du joint brasé solidifié isothermique avec des propriétés mécaniques similaires à celles du matériau support.
Fernihough John
Konter Maxim
Schnell Alexander
Alstom (switzerland) Ltd.
Alstom Technology Ltd
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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