Development of Multi-layer Aluminum Alloys for Armor

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911NF-11-C-0034
Agency Tracking Number: A2-4135
Amount: $749,972.00
Phase: Phase II
Program: STTR
Awards Year: 2011
Solitcitation Year: 2009
Solitcitation Topic Code: A09A-T010
Solitcitation Number: 2009.A
Small Business Information
Touchstone Research Laboratory, Ltd.
The Millennium Centre, 1142 Middle Creek Road, Triadelphia, WV, -
Duns: 101582922
Hubzone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 G.S. Murty
 Senior Materials Engineer
 (304) 547-5800
 gsm@trl.com
Business Contact
 Elizabeth Kraftician
Title: President&CEO
Phone: (304) 547-5800
Email: enk@trl.com
Research Institution
 North Carolina State University
 Patrick T Hayes
 Office of Sponsored Programs
2701 Sullivan Drive, Suite 240
Raleigh, NC, 27695-7514
 (919) 515-2444
 Nonprofit college or university
Abstract
The proposed STTR Phase II study is aimed at exploring lightweight and multi-layer materials towards enhancing their armor performance. Different Al alloys will be assembled into a multi-layer configuration with good metallic bond between inter-layers. 2139-T8 Al alloy evolved by efforts of Alcan and the Army Research Laboratory will be selected as one of the layers in the laminated assembly. Other high-performance alloys will be used for the additional layer of alloys for the trials. Different multi-layer plates will be processed by hot rolling, and the resulting roll-bonded laminates will be suitably heat treated. In addition to their quasi-static and dynamic testing, ballistic tests of each of the laminates will be performed to obtain their V50 properties against various ballistic threats. For each plate, ballistic tests will be conducted such that the striking side of the projectile successively includes each of the two sides of plate. Following testing, the microstructural damage will be assessed to understand the structure-property correlations. Computational analysis of the layered materials will be carried out, and the experimental results will be compared with the predictions of computer modeling.

* information listed above is at the time of submission.

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