Modeling-Based Processing of Al-Li Alloys for Delamination Resistance

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$80,005.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CH14P
Award Id:
n/a
Agency Tracking Number:
104848
Solicitation Year:
2010
Solicitation Topic Code:
X5.02
Solicitation Number:
n/a
Small Business Information
12050 Jefferson Avenue, Suite 240, Newport News, VA, 23606-2385
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
099194958
Principal Investigator:
RoyCrooks
Principal Investigator
(757) 269-0230
gm@black-labs.org
Business Contact:
TracyCrooks
Business Official
(757) 269-0230
gm@black-labs.org
Research Institute:
Stub




Abstract
Al-Li alloys are of interest for use in aerospace structures due to the desirable combination of high strength and low density. However, high strength Al-Li alloys exhibit an intergranular delamination fracture mode which has limited widespread structural applications. Previous work at NASA LaRC, under limited testing, found that the failures tend to be between grains of the two Brass texture component variants. Taylor Factor calculations show these to have severe strain incompatibility. These grain orientations are known to develop as a preferred orientation in Al-Li-X-Zr alloys during severe, hot rolling. This program will verify the results and work with Industry to develop an alternative, delamination-free process.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government