EP 0792945 B1 19981202 - Process for heat treatment of a nickel-base superalloy
Title (en)
Process for heat treatment of a nickel-base superalloy
Title (de)
Wärmebehandlungsverfahren für Superlegierung auf Nickelbasis
Title (fr)
Procédé de traitement thermique d'un superalliage à base de nickel
Publication
Application
Priority
FR 9602534 A 19960229
Abstract (en)
[origin: EP0792945A1] A method for heat treating nickel superalloy forgings containing 11-13 wt % of Cr, 8-17 wt % of Co, 6-8 wt % of Mo, 4-5 wt % of Ti, 4-5 wt % of Al, no more than 0.5 wt % of Nb, and no more than 500 ppm of Hf, the balance to 100 wt % being Ni, is disclosed. According to the method, an intermediate heat treatment is carried out at a temperature between the gamma ' solvus minus 95 DEG C and the gamma ' solvus minus 30 DEG C, following hot forging at a temperature between the gamma ' solvus minus 95 DEG C and the gamma ' solvus minus 45 DEG C, with a strain rate of 5.10<-5>s<-1> to 2.10<-2>s<-1>, and a deformation ratio higher than 0.1, and prior to a supersolvus heat treatment at a temperature between the gamma ' solvus plus 5 DEG C and the gamma ' solvus plus 25 DEG C for 1 to 4 hours.
IPC 1-7
IPC 8 full level
C22C 19/05 (2006.01); C22F 1/00 (2006.01); C22F 1/10 (2006.01)
CPC (source: EP)
C22F 1/10 (2013.01)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 0792945 A1 19970903; EP 0792945 B1 19981202; DE 69700059 D1 19990114; DE 69700059 T2 19990527; FR 2745588 A1 19970905; FR 2745588 B1 19980430; JP 3926877 B2 20070606; JP H1025557 A 19980127; RU 2133784 C1 19990727; WO 9732052 A1 19970904
DOCDB simple family (application)
EP 97400438 A 19970227; DE 69700059 T 19970227; FR 9602534 A 19960229; FR 9700344 W 19970227; JP 4599197 A 19970228; RU 97119622 A 19970227