Development of Corrosion-Hydrogen Cracking Resistant Aircraft Alloys from Mechanistic Understanding

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-09-C-0378
Agency Tracking Number: N08A-010-0205
Amount: $749,535.00
Phase: Phase II
Program: STTR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: N08-T010
Solicitation Number: 2008.A
Small Business Information
65 West Street Road, Building C, Warminster, PA, 18974-
DUNS: 095275343
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jeffrey Waldman
 Principal Investigator
 (215) 675-4900
Business Contact
 Robert Bauder
Title: Principal Investigator
Phone: (610) 619-7443
Research Institution
 Carnegie Mellon University
 Warren Garrison
 5000 Forbes Avenue
Pittsburgh, PA, 15213-3890
 (412) 268-3593
 Nonprofit college or university
High strength steel components for Navy aircraft are subjected to the harsh corrosive maritime environment. Specifically, Hydrogen Environment Assisted Cracking (HEAC) is a dominant problem associated with corrosion. This STTR project is aimed at establishing the experimental characterization and modeling method as well as fundamental understanding necessary to develop corrosion resistant high strength steels. The Phase II STTR work will expand and validate the predictive tool methodology established in Phase I to the environmental and mechanical loading conditions characteristic of selected JSF components for program risk reduction. The predictive tool for HEAC will be delivered to NAVAIR for use on Navy aircraft and ASTM standardization advocated. Phase II work will combine processing alternatives and alloy modifications based upon the feasibility shown in Phase I to enhance the HEAC resistance of AerMet 100 steel and to develop low cost, high strength steels with good HEAC resistance. Specifically, the role of chilling on the HEAC resistance of AerMet 100 will be established and a secondary hardening steel that is lower in cost than AerMet 100 but with equal or better HEAC resistance will be developed.

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

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