A cast nickel-iron-base alloy component and process of forming a cast nickel-iron-base alloy component

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EP 2 617 846 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.02.2014 Bulletin 2014/07

(43)	Date of publication A2:
	24.07.2013 Bulletin 2013/30

(21)	Application number: 12191913.8

(22)	Date of filing: 09.11.2012

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International Patent Classification (IPC):

C22C 19/05^(2006.01)
F01D 5/00^(2006.01)

C22F 1/10^(2006.01)
F01D 9/02^(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

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Priority:

18.11.2011 US 201113299823

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

(72)	Inventors:
	Goller, George Albert Greenville, SC South Carolina 29615 (US) Laylock, Matthew Greenville, SC South Carolina 29615 (US) Razum, Joseph C. Greenville, SC South Carolina 29615 (US) Feng, Ganjiang Greenville, SC South Carolina 29615 (US)

(74)	Representative: Szary, Anne Catherine
	GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith London W6 8BJ London W6 8BJ (GB)

(54)	A cast nickel-iron-base alloy component and process of forming a cast nickel-iron-base alloy component

(57) A cast nickel-iron-base alloy component having by weight 12.0 % to 16.5 % Cr, 1.0 % to 2.0 % Al, 2.0 % to 3.0 % Ti, 2.0 % to 3.0 % W, 3.0 to 5.0 % Mo, up to 0.1 % Nb, up to 0.2 % Mn, up to 0.1 % Si, 0.05 % to 0.10 % C, 0.003 to 0.010 % B, 35 % to 37 % Fe, and balance Ni and inevitable impurities. The nickel-iron-base alloy component has a creep rupture life greater than 1000 hours at 25 ksi to 30 ksi at 1400 °F. A method for forming the cast nickel-iron-base alloy component is also disclosed.

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