EP 2321440 A2 20110518 - METHOD FOR PREPARING A NICKEL SUPERALLOY PART, AND PART THUS OBTAINED
Title (en)
METHOD FOR PREPARING A NICKEL SUPERALLOY PART, AND PART THUS OBTAINED
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES TEILS AUS NICKEL-SUPERLEGIERUNG UND SO ERHALTENES TEIL
Title (fr)
PROCÉDÉ DE PRÉPARATION D'UNE PIÈCE EN SUPERALLIAGE BASE NICKEL ET PIÈCE AINSI OBTENUE
Publication
Application
Priority
- FR 2009051624 W 20090824
- FR 0855716 A 20080826
- US 9192608 P 20080826
Abstract (en)
[origin: WO2010023405A2] The invention relates to a method for preparing a nickel superalloy part by: - developing a nickel superalloy from a composition capable of hardening through double precipitation of a gamma' phase and a gamma" or delta phase; - spraying a molten mass of said superalloy to obtain a powder; - sifting said powder; - placing said powder in a container; - closing and placing the container in a vacuum; - densifying the powder and the container to obtain an ingot or billet; - hot forming said ingot or said billet; characterized in that, before the densifying step, the powder and the container are heated for at least 4 hours to a temperature that is both greater than 1,140°C and less than the solidus temperature of the superalloy by 10°C at a pressure causing a densification less than or equal to 15% of the powder volume. The invention also relates to a part thus produced.
IPC 8 full level
C22C 1/04 (2006.01)
CPC (source: EP US)
C22C 1/0433 (2013.01 - EP US); C22C 19/055 (2013.01 - EP US); C22C 19/056 (2013.01 - EP US); B22F 2998/10 (2013.01 - EP US)
Citation (search report)
See references of WO 2010023405A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2010023405 A2 20100304; WO 2010023405 A3 20140904; EP 2321440 A2 20110518; FR 2935396 A1 20100305; FR 2935396 B1 20100924; US 2011150693 A1 20110623; US 8889064 B2 20141118
DOCDB simple family (application)
FR 2009051624 W 20090824; EP 09740490 A 20090824; FR 0855716 A 20080826; US 200913060047 A 20090824