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More Durable Pin Tools for Friction Stir Welding

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC20C0352
Agency Tracking Number: 206207
Amount: $124,999.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: Z3
Solicitation Number: SBIR_20_P1
Solicitation Year: 2020
Award Year: 2020
Award Start Date (Proposal Award Date): 2020-08-24
Award End Date (Contract End Date): 2021-03-01
Small Business Information
28245 Via Del Mar
San Juan Capistrano, CA 92675-6342
United States
DUNS: 621604128
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 Edward Chen
 (714) 283-2118
Business Contact
 Edward Chen
Phone: (714) 283-2118
Research Institution

This SBIR Phase I project will develop a novel processing method for W-Re alloys that will allow for higher performance pin tools for use in friction stir welding (FSW). A solid state process, FSW is fast becoming the process of choice for the manufacture of lighter weight aerospace structures.nbsp; As such, it is being considered as an essentially complementary joining capability for on-orbit and space environments. Pin tool technology especially for higher temperature FSW continues to be a major challenge and will limit usage in space if not further advanced. An ideal pin tool should have high toughness, good strength, excellent wear resistance, and be chemically inert at welding temperatures. Tungsten-based tools have good fracture toughness, but are also very expensive and experience severe wear and degradation during high temperature welding. A greatly improved, more cost-effective, and near-net process was developed to process pure W components with refined microstructures. If successfully applied to W-Re alloys to enhance the properties, higher performance pin tools may be possible.

* Information listed above is at the time of submission. *

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