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Computational Design of MoCr Superalloys for High Temperature Service

Award Information

Department of Defense
Defense Advanced Research Projects Agency
Award ID:
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
QuesTek Innovations LLC
1820 Ridge Avenue Evanston, IL -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2009
Title: Computational Design of MoCr Superalloys for High Temperature Service
Agency / Branch: DOD / DARPA
Contract: W31P4Q-09-C-0450
Award Amount: $98,978.00


This Phase I project applies QuesTek's unique computational materials design technology to the development of ductile, oxidation-resistant, and creep-resistant MoCr superalloys for use at 1300oC and above. Mo-Si-B or Nb-based systems developed for such demanding structural applications have encountered significant difficulties related to ductility and/or oxidation-resistance. QuesTek will pursue a radical new microstructural concept with the potential of achieving critical performance requirements simultaneously: novel multiphase Mo-Cr alloys composed of a ductile BCC matrix (for toughness) and aluminide phases for oxidation resistance and creep strength. Utilizing CALPHAD-based thermodynamics, and building on prior research at Northwestern University on refractory metal systems, the ductility and oxidation resistance of the Mo-Cr alloys will employ the following design strategies: a) Increasing the ductility of the BCC matrix phase by suitable alloying additions based on quantum-mechanical calculations of the generalized stacking fault energy, minimizing the matrix DBTT and b) Improving intrinsic oxidation resistance of the BCC matrix, using design methods for external protective oxide-scale formation. Phase I will design and validate proof-of-concept Mo-Cr alloys at sub-scale, and Phase II will develop, prototype, and characterize for subsequent implementation into DoD weapons platforms.

Principal Investigator:

James Wright
Director - Product Development

Business Contact:

Raymond Genellie,
Vice President - Operations
Small Business Information at Submission:

1820 Ridge Avenue Evanston, IL 60201

EIN/Tax ID: 364116425
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No