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Thermal Stir Welding of High Strength and High Temperature Alloys for Aerospace…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2009 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Keystone Synergistic Enterprises, Inc.
664 NW Enterprise Drive Suite 118 Port Saint Lucie, FL 34986-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2009
Title: Thermal Stir Welding of High Strength and High Temperature Alloys for Aerospace Applications
Agency: NASA
Contract: NNX09CF78P
Award Amount: $99,836.00


The Keystone and MSU team propose to demonstrate the feasibility of solid-state joining high strength and temperature alloys utilizing the Thermal Stir Welding process. The alloy selected for this proposed effort is Haynes 230; the alloy of choice typically utilized in rocket engine nozzel skirts. This class of alloys is difficult to fusion weld and has not been shown weldable by friction stir methods. Thus, the Keystone team is proposing to utilize the Thermal Stir Welding process; a solid-state welding process that decouples the stirring and heating features of the process to enable optimization of each key parameter. By independently controlling and optimizing these two process parameters, the best metal working parameters can be identified and utilized to plasticize and stir the Haynes 230 alloy to achieve solid-state welding. Achievement of this objective will enable superior mechanical properties in the weld joint and thus maximize the capability of the weld for the intended application.

Principal Investigator:

Bryant H. Walker
Principal Investigator

Business Contact:

Bryant H. Walker
Business Official
Small Business Information at Submission:

Keystone Synergistic Enterprises, Inc.
698 SW Port Saint Lucie Blvd., Suite 105 Port Saint Lucie, FL 34953

EIN/Tax ID: 651136876
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Mississippi State University
210 Carpenter Engineering Bldg.
Mississippi State University, MS 39762 6156
Contact Phone: (662) 325-9154
RI Type: Nonprofit college or university