EP 1176222 A3 20020306 - Heat treatment of nickel-base superalloy die inserts
Title (en)
Heat treatment of nickel-base superalloy die inserts
Title (de)
Wärmebehandlung von Matrizeeinsätzen bestehend aus Superlegierungen auf Nickel-Basis
Title (fr)
Traitement thermique d'un insert de matrice en supperalliages à base de Ni
Publication
Application
Priority
- US 21560100 P 20000630
- US 82512801 A 20010403
Abstract (en)
[origin: EP1176222A2] A rigid die insert for forming and shaping a working material comprises a nickel-base superalloy, preferably Rene 95. A plurality of gamma prime particles are uniformly distributed throughout the rigid die insert, which has a Rockwell hardness Rc of between about 48 and about 52. The invention also includes a method of treating a rigid die insert comprising a nickel-base superalloy to reduce crack propagation and raise yield stress. The method comprises the steps of: providing the rigid die insert; dissolving larger gamma-prime particles in the rigid die insert; and growing additional gamma-prime particles of smaller particle size in the rigid die insert, whereby the particle size of each of the plurality of gamma-prime particles is refined, thereby reducing crack propagation and raising the yield stress of the rigid die insert. A method of refining the particle size of gamma-prime particles in a Rene 95 superalloy is also disclosed.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
Citation (search report)
- [XY] EP 0238478 A2 19870923 - VER EDELSTAHLWERKE AG [AT]
- [XY] EP 0073101 A1 19830302 - BICC PLC [GB]
- [XY] EP 0460678 A1 19911211 - KOBE STEEL LTD [JP]
- [Y] US 5328659 A 19940712 - TILLMAN THOMAS D [US], et al
- [XY] PETER J. BLAU: "ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology", 1992, ASM INTERNATIONAL, USA, XP002182913
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1176222 A2 20020130; EP 1176222 A3 20020306; CA 2351153 A1 20011230; US 2002139458 A1 20021003
DOCDB simple family (application)
EP 01305605 A 20010627; CA 2351153 A 20010621; US 82512801 A 20010403