EP 1378582 A1 20040107 - A method of heat treating titanium aluminide
Title (en)
A method of heat treating titanium aluminide
Title (de)
Verfahren zur Wärmebehandlung von TiAl-Legierungen
Title (fr)
Procédé pour le traitement thermique des alliages de TiAl
Publication
Application
Priority
GB 0215563 A 20020705
Abstract (en)
A gamma titanium aluminide alloy consisting of 48at% aluminium, 2at% chromium, 2at% niobium and the balance titanium plus incidental impurities was heat treated according to the present invention. The gamma titanium aluminide alloy has an alpha transus temperature T alpha = 1360 DEG C. The gamma titanium aluminide alloy was heated to a temperature T1 = 1380 DEG C and was held at T1 = 1380 DEG C for 1 hour. The gamma titanium aluminide alloy was oil cooled. The gamma titanium aluminide alloy was heated to a temperature T2 = 1320 DEG C and was held at T2 = 1320 DEG C for 2 hours. The gamma titanium aluminide alloy was air cooled to ambient temperature. The gamma titanium aluminide alloy has a fine duplex microstructure comprising differently orientated alpha plates in a massively transformed gamma matrix. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C22F 1/04 (2013.01 - EP US); C22F 1/183 (2013.01 - EP US)
Citation (search report)
- [A] US 5746846 A 19980505 - KIM YOUNG-WON [US], et al
- [A] US 5653828 A 19970805 - ZHAO LINRUO [CA], et al
- [A] US 5417781 A 19950523 - MCQUAY PAUL A [US], et al
- [A] SEMIATIN S L ET AL: "HOMOGENIZATION OF NEAR-GAMMA TITANIUM ALUMINIDES: ANALYSIS OF KINETICS AND PROCESS SCALEUP FEASIBILITY", METALLURGICAL TRANSACTIONS A. PHYSICAL METALLURGY AND MATERIALS SCIENCE, METALLURGICAL SOCIETY OF AIME. NEW YORK, US, vol. 24A, no. 6, 1 June 1993 (1993-06-01), pages 1295 - 1306, XP000369947
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1378582 A1 20040107; EP 1378582 B1 20041020; DE 60300101 D1 20041125; DE 60300101 T2 20050303; GB 0215563 D0 20020814; US 2004003877 A1 20040108
DOCDB simple family (application)
EP 03253539 A 20030604; DE 60300101 T 20030604; GB 0215563 A 20020705; US 45561303 A 20030606