Laser shock peened dies

Details Laser shock peened dies Laser shock peened dies

1995-12-18

1997-09-30

Jones, David

Metal deforming

By shot-blasting

29 907, 148525, 21912168, 21912169, C21D 706, C22C 1400

Patent

active

056716281

ABSTRACT:
A die having a metallic block with a depression, the depression having at least one cross-sectional transition zone, at least one laser shock peened surface encompassing at least a portion of the zone, a region having deep compressive residual stresses imparted by laser shock peening (LSP) extending into the airfoil from the laser shock peened surface. The die has been found to be useful for cold rolling blanks such when the metallic block is a cold rolling die block. The die may be adapted for forming a gas turbine engine component, such as a compressor blade, having an airfoil such that the depression corresponds to the airfoil.

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"Laser shocking extends fatigue life", by John A. Vaccari, American Machinist, A Penton Publication, Jul. 1992, pp. 62-64.
"Effects Of Laser Induced Shock Waves On Metals", by Clauer, Holbrook and Fairans, Chapter 38, pp. 675-702.
"Laser Shock Processing Increases the Fatigue Life of Metal Parts", Materials and Processing Report, Sep. 1991, pp. 3-5.

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