EP 0533914 B1 19970312 - SUPERALLOY FORGING PROCESS AND RELATED COMPOSITION
Title (en)
SUPERALLOY FORGING PROCESS AND RELATED COMPOSITION
Title (de)
Schmiedeverfahren für Superlegierungen und verwandte Zusammensetzung
Title (fr)
PROCEDE DE FORGEAGE DE SUPERALLIAGES ET COMPOSITION CONNEXE
Publication
Application
Priority
- US 9203082 W 19920415
- US 68558191 A 19910415
Abstract (en)
[origin: WO9218659A1] A process for producing a fine grain forged superalloy article having a high yield strength at intermediate temperatures. A preferred starting composition comprises, by weight, 15 % Cr, 13.6 % Co, 4.1 % Mo, 4.6 % Ti, 2.2 % Al, 0.01 % C, 0.007 % B, 0.07 % Zr, balance Ni. This material is forged at a temperature above the gamma prime solvus and at a true strain of at least 0.5. Alternately, the material may be forged below the gamma prime solvus temperature with intermediate super solvus anneals. The overaged material is then worked at a temperature below the gamma prime solvus. The resultant fine grain material is then heat treated or can be further isothermally forged prior to heat treatment to produce complex shapes.
IPC 1-7
IPC 8 full level
C22C 19/05 (2006.01); C22F 1/10 (2006.01)
CPC (source: EP KR)
C22C 19/056 (2013.01 - EP); C22F 1/10 (2013.01 - EP KR)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9218659 A1 19921029; DE 69218089 D1 19970417; DE 69218089 T2 19970619; EP 0533914 A1 19930331; EP 0533914 B1 19970312; JP 3073525 B2 20000807; JP H05508193 A 19931118; KR 100187794 B1 19990601; KR 930700231 A 19930313
DOCDB simple family (application)
US 9203082 W 19920415; DE 69218089 T 19920415; EP 92911977 A 19920415; JP 51174092 A 19920415; KR 920703226 A 19921214