Jason Sebastian, Ph.D.

Director of Technology


Ph.D. Materials Science and Engineering, Northwestern University, 2004, dissertation entitled: “Nanoscale Three-Dimensional Studies of Segregation at Ceramic/Metal Interfaces”

CPGS Materials Science and Metallurgy, University of Cambridge, Cambridge, UK, 1997

B.S. Ceramic Engineering with Highest Honors, and B.A. Philosophy Summa Cum Laude, University of Illinois at Urbana-Champaign, 1996


Jason T. Sebastian, Ph.D. is the manager of QuesTek’s “Technology Group” (which, as of September 2015, includes 11 full-time employees—10 with Ph.D. degrees, and 1 with an M.S. degree).  He is a specialist in the fields of computational materials design and nanostructural materials characterization. Since joining QuesTek in 2006, his work has focused on: the development of high strength steels for structural and power transmission applications; precipitation-strengthened Co-based alloys; alloys for additive manufacturing; non-toxic, high-strength/low-friction Cu-based alloys to replace Pb-containing bronzes; a low-cost, castable titanium alloy; a highly-processable Ni-based superalloy; advanced soft magnetic alloys; and other computationally-designed alloys. His past research activities include extensive experience with advanced characterization techniques including electron microscopy and atom-probe tomography.

Honors, Awards and Patents (selected)

•    US patent US 8801872 B2—“Secondary-hardening gear steel”
•    US patent US 8518192 B2—“Lead-free, high-strength, high-lubricity copper alloys”
•    Pending US patent US 20110268602 A1—“Titanium alloys”
•    Pending World Intellectual Property Organization patent WO 2014081491 A2—“Cobalt alloys”
•    Naval Air Warfare Center Aircraft Division (NAWCAD) Commander’s Award (November 2012)
•    Department of Defense National Defense Science and Engineering Graduate Fellowship (1998-2001 academic years)
•    Winston Churchill Foundation Scholarship (1996-1997 academic year)
•    University Honors “Bronze Tablet Award”—the highest award presented by the University of Illinois at Urbana-Champaign to undergraduates

Professional Associations (selected)

•    ASM International
•    The Minerals, Metals, and Materials Society (TMS)
•    Materials Research Society (MRS)

Publications and Presentations

•    “Integrated Computational Materials Engineering Development of High-Strength Molybdenum Alloys with Improved Ductility,” presentation at AeroMat 2015 Conference, Long Beach, CA, May 2015.
•    “Integrated Computational Materials Engineering (ICME) Development of a High-Hardness Solution-Nitrided Stainless Steel,” presentation at AeroMat 2015 Conference, Long Beach, CA, May 2015.
•    “Integrated Computational Materials Engineering (ICME) Approach to the Design of Materials for Additive Manufacturing,” presentation at RAPID 2015 Conference, Long Beach, CA, May 2015.
•    J. Sebastian and G.B. Olson, “Examples of QuesTek Innovations’ Application ICME to Materials Design, Development, and Rapid Qualification,” Conference Paper—55th AIAA/ASMe/ASCE/AHS/SC Structures, Structural Dynamics, and Materials Conference, Washington DC, January 2014.
•    “QuesTek Innovations’ ICME Approach to Materials Design and Development (New Ferrium® High-Performance Gear and Structural Steels),” presentation at MS&T Conference, Montreal, Canada, October 2013.
•    “Integrated Computational Materials Engineering Helps Successfully Develop Aerospace Alloys,” Advanced Materials and Processes, 2013.
•    “Design, Development and Application of New, High-Performance Gear Steels”, Gear Technology, January/February 2010.
•    J. Sebastian and G.B. Olson, “Atom-Probe Tomography in Materials Design,” presentation at TMS 2009 Annual Meeting and Exhibition, San Francisco, CA, February 2009.
•    G.B. Olson, H.J. Jou, J. Jung, J. Sebastian, A. Misra, I. Locci, and D. Hull, “Precipitation model validation in 3rd generation aeroturbine disc alloys,” Superalloys 2008, 2008.