Development of Multi-layer Aluminum Alloys for Armor

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$99,996.00
Award Year:
2009
Program:
STTR
Phase:
Phase I
Contract:
W911NF-09-C-0146
Award Id:
90050
Agency Tracking Number:
A09A-010-0387
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
The Millennium Centre, R.R. 1, Box 100B, Triadelphia, WV, 26059
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
101582922
Principal Investigator:
G.S. Murty
Senior Materials Engineer
(304) 547-5800
gsm@trl.com
Business Contact:
Brian Joseph
President, COO
(304) 547-5800
bej@trl.com
Research Institution:
North Carolina State University
Matthew Ronning
Office of Sponsored Programs
2270 Sullivan Drive, Suite 240
Raleigh, NC, 27695
(919) 515-2444
Nonprofit college or university
Abstract
The proposed STTR Phase I study is aimed at exploring lightweight and multi-layer materials towards enhancing their armor performance. Different Al alloys will be assembled into a two-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. 5083, 7xxx and 3003 will be the second layer alloys for trials. Different two-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. 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. Finally, the feasibility of this layered material approach towards improving ballistic response will be determined by this study.

* information listed above is at the time of submission.

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