Nickel Superalloy IBR/Blisk Repair Technology

Award Information
Agency:
Department of Defense
Amount:
$992,676.00
Program:
SBIR
Contract:
N68335-10-C-0046
Solitcitation Year:
2008
Solicitation Number:
2008.1
Branch:
Navy
Award Year:
2010
Phase:
Phase II
Agency Tracking Number:
N081-034-0245
Solicitation Topic Code:
N08-034
Small Business Information
Keystone Synergistic Enterprises, Inc.
698 SW Port Saint Lucie Blvd, Suite 105, Port Saint Lucie, FL, -
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
114133213
Principal Investigator
 Bryant Walker
 President
 (772) 343-7544
 bryant@keystonehq.com
Business Contact
 Bryant Walker
Title: President
Phone: (772) 343-7544
Email: bryant@keystonehq.com
Research Institution
N/A
Abstract
State-of-the-art military turbine engines incorporate Integral Bladed Rotors (IBR), which are one piece components consisting of blades and a disk (blisks), in the compression system. Their purpose is to reduce weight through part count reduction and improve performance and maintainability. However, to maintain affordability, the need for weld repairs of either partial or full blades is warranted to avoid expensive IBR/blisk replacements resulting from foreign object damage (FOD) to the airfoils. No adequate technology exists today to repair fielded engines. For alloys commonly used in fans and compressors, current pre- and/or post-weld heat treatment practices, as part of the repair of airfoils, result in unacceptable micro-structural degradation in the highly stressed disk portion of the IBRs/blisks. Exposing the undamaged airfoils to needless heat treatment at every repair leads to significant reduction in their structural capability. Thus a novel and enabling weld repair technology that will permit independent repair and optimization of airfoil and disk material properties is proposed to retain and restore the high cycle fatigue (HCF) characteristics of IBRs/blisks. The proposed technology has the potential to meet these requirements in addition to addressing affordability and maintainability requirements of advanced military propulsion power plants.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government