Innovative Approaches for the Development of Ultra-High Strength Intrinsically Corrosion Resistant Steel

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$749,947.00
Award Year:
2011
Program:
SBIR
Phase:
Phase II
Contract:
N00014-11-C-0077
Award Id:
n/a
Agency Tracking Number:
O2-0991
Solicitation Year:
2009
Solicitation Topic Code:
OSD09-C04
Solicitation Number:
2009.1
Small Business Information
65 West Street Road, Building C, Warminster, PA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
095275343
Principal Investigator:
Jeffrey Waldman
Principal Investigator
(215) 675-4900
waldman@navmar.com
Business Contact:
Robert Bauder
Vice President, Dir. of C
(610) 619-7443
bauder@navmar.com
Research Institute:
Stub




Abstract
The materials used in Navy aircraft are subjected to the harsh corrosive maritime operational environment which can cause costly maintenance problems and failures. Current alloys such as AerMet 100 have excellent strength and toughness but are not corrosion resistant. This SBIR has the goal of developing ultra high strength stainless steels with mechanical properties equal to those of AerMet 100 and the corrosion resistance of PH 13-8 (H1025). The Phase I SBIR designed and modeled alloys along with demonstrating the feasibility of producing and testing laboratory scale quantities of the alloys. Two martensitic stainless steel type alloys containing 12 % Cr, 4-6% Ni were designed and produced using strengthening mechanisms of (1) secondary hardening and NiAl precipitates or (2) secondary hardening enhanced by Si additions. Testing results showed that the alloys with secondary hardening and NiAl precipitates had low toughness. Si additions had positive effects on secondary hardening, but Si should be used with Co additions instead of Ni to get improved strength and toughness. The proposed Phase II program involves producing/evaluating secondary hardening steels containing 12 % Cr, 10 %Co with Si or Al and producing/evaluating generic and actual landing gear component parts made from the new alloys.

* information listed above is at the time of submission.

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