(19)
(11) EP 2 641 984 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.03.2014 Bulletin 2014/11

(43) Date of publication A2:
25.09.2013 Bulletin 2013/39

(21) Application number: 13159885.6

(22) Date of filing: 19.03.2013
(51) International Patent Classification (IPC): 
C22C 14/00(2006.01)
 C22F 1/18(2006.01)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 23.03.2012 US 201261614751 P
30.04.2012 US 201213459420

(71) Applicant: General Electric Company
Schenectady, New York 12345 (US)

(72) Inventors:
  • Kelly, Thomas Joseph
    Cincinnati, OH Ohio 45215 (US)
  • Bewlaw, Bernard Patrick
    Niskayuna, NY New York 12309 (US)
  • Weimer, Michael James
    Cincinnati, OH Ohio 45215 (US)
  • Whitacre, Richard Kenneth
    Cincinnati, OH Ohio 45215 (US)

(74) Representative: Williams, Andrew Richard 
GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith
London W6 8BJ
London W6 8BJ (GB)

   


(54) Methods for processing titanium aluminide intermetallic compositions


(57) Methods of processing compositions containing titanium and aluminum, especially titanium aluminide intermetallic compositions (TiAl intermetallics) based on the TiAl (gamma) intermetallic compound. The methods entail processing steps that include a hot isostatic pressing (HIP) cycle and a heat treatment cycle that can be performed in a single vessel. TiAl intermetallic compositions processed in this manner preferably exhibit a duplex microstructure containing equiaxed and lamellar morphologies.







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