Fatigue Resistant Martensitic Steel for Rotorcraft Drive Train Components

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911W6-11-C-0053
Agency Tracking Number: A2-4604
Amount: $729,577.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: A10-035
Solicitation Number: 2010.2
Small Business Information
QuesTek Innovations LLC
1820 Ridge Avenue, Evanston, IL, -
DUNS: 088176961
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James Wright
 Director of Product Devel
 (847) 425-8225
 jwright@questek.com
Business Contact
 Raymond Jr.
Title: Vice President - Operatio
Phone: (847) 425-8211
Email: rgenellie@questek.com
Research Institution
 Stub
Abstract
In Phase I of this SBIR program, QuesTek successfully demonstrated a novel thermomechanical processing technique to enhance the bending fatigue resistance of Ferrium C64 steel. A systems-engineering approach was followed to identify key microstructure attributes (e.g., nonmetallic inclusions) that control the mean and minimum fatigue resistance of the aforementioned steel. Through carefully devised experiments, QuesTek successfully optimized the thermomechanical process. Coupon scale fatigue testing was pursued to demonstrate enhancement in fatigue resistance.In Phase II, QuesTek proposes to build on the Phase I effort to scale up the thermomechanical process to actual test gears. Furthermore, QuesTek will attempt to optimize the thermomechanical processing for other steels of interest to ARMY such as AISI 9310, pyrowear X53, Ferrium C61 and Ferrium M54. Both single tooth bending fatigue and axial fatigue tests will be performed to demonstrate property enhancement. Additionally, mechanistic process modeling specifically targeting hot deformation such as forging and other thermomechanical processing will be identified and implemented; the model is envisioned to provide support to framing key processing parameters that maximizes fatigue resistance. The envisioned thermomechanical process will be complementary with other fatigue-enhancing processes such as peening.

* information listed above is at the time of submission.

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