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Rapid Freezing Injection Molding and Sublimation Process for Fabrication of Controlled Fragmentation Tungsten Warheads

Award Information
Agency: Department of Defense
Branch: Army
Contract: W15QKN-22-P-0064
Agency Tracking Number: A22B-T005-0149
Amount: $172,802.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: A22B-T005
Solicitation Number: 22.B
Solicitation Year: 2022
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-09-30
Award End Date (Contract End Date): 2023-03-30
Small Business Information
NORTON, MA 02766-2102
United States
DUNS: 120998661
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Mark A. Occhionero
 (508) 222-0614
Business Contact
 Michael McCormack
Phone: (508) 220-0614
Research Institution
 University of Utah
 Zhigang Fang
135 South 1460 East, Room 405
Salt Lake City, UT 84112
United States

 (801) 581-8128
 Nonprofit College or University

Tungsten (W) has been considered for warhead applications as it has a high density, potentially resulting increased lethality from small, low drag, high kinetic energy fragments at increased or predictable standoff distances.  Injection molding (IM) is considered to be the low-cost fabrication high production volume approach for production providing features that promote fragmentation without machining.  This study will demonstrate the use of the CPS QuickSetTM Injection Molding (QIM) process for the production of tungsten, and tungsten alloys sintered materials for this application.  CPS will fabricate green bodies of W and W-Cu alloys to be sintered by the University of Utah.  These materials will be evaluated for sinterablity, density, microstructure development, and mechanical properties will be measured and evaluated with respect to warhead application.  This study will explore the mechanical behavior transitions between brittle and ductile fracture as a function of Cu concentration and the influence on fragmentation. A demonstration piece with warhead fragmentation will also be produced using QIM.  The study will also determine the necessity of a pusher plate.

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

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