Jason Sebastian, Ph.D.

Director of Technology


Ph.D. Materials Science and Engineering, Northwestern University, 2004

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

Current Role at QuesTek

Jason T. Sebastian, Ph.D. is the director of QuesTek’s “Technology Group” (which, as of September 2016, includes 12 full-time employees—10 with Ph.D. degrees, and 2 with M.S. degrees).  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 cobalt-based alloys; alloys for additive manufacturing; non-toxic, high-strength/low-friction copper-based alloys to replace lead-containing bronzes; a low-cost, castable titanium alloy; a highly-processable nickel-based superalloy; advanced soft magnetic alloys; and other computationally-designed alloys.

Background and Specialization

His past research activities include extensive experience with advanced characterization techniques including electron microscopy and atom-probe tomography. His Ph.D. dissertation is entitled: “Nanoscale Three-Dimensional Studies of Segregation at Ceramic/Metal Interfaces.”

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.