Stock material or miscellaneous articles – All metal or with adjacent metals – Having composition – density – or hardness gradient
Patent
1995-03-06
1996-06-11
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Having composition, density, or hardness gradient
428660, 428668, 428680, 428937, 148525, 298891, C21D 700, B23P 1502, B23K 2600
Patent
active
055254292
ABSTRACT:
A metallic article and method for producing such an article, having a metallic substrate, at least one metallic layer sprayed onto a laser shock peened surface area of the substrate, and a region having deep compressive residual stresses imparted by laser shock peening extending into the substrate from the laser shock peened surface. The metallic substrate and or layer may be made from an alloy such as a Cobalt or a Nickel based superalloy. The substrate may be made from Nickel Base forgings or Titanium base forgings. An exemplary embodiment of the present invention is a gas turbine engine rotor component such a disk and, more particularly, a turbine disk suitable for use in a hot section of a gas turbine engine. The invention may be used for new or refurbished parts to restore dimensions of the component and, in particular, radial dimensions.
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American Machinist, "Laser Shocking Extends Fatigue Life", by John A. Vaccari, pp. 62-64, Jul. 1992, A Penton Publication.
Cowie William D.
Ferrigno Stephen J.
Mannava Seetharamaiah
General Electric Company
Hess Andrew C.
Narciso David L.
Zimmerman John
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