Richard Karnesky : Curriculum Vitae
I investigate how nanoscale compositional variations in alloys influence bulk properties. At Sandia, I (i) measure hydrogen isotope transport and trapping in metals; (ii) characterize advance materials with atom-probe tomography (APT); and (iii) manage materials data.
Senior Materials Scientist, Sandia National Laboratories — Livermore, CA — Apr 2010 – Present
- Lead of W80–4 Materials@Risk (M@R) Task for Materials Compatibility Qualification and Database Lead for the multi-lab M@R initiative, where we’ve brought Granta Materials Intel-
ligence into the Common Engineering Environment, integrated it with Windchill PDMLink, and created tools to assess and report on risk factors that may lead to materials unavailability.
- Sandia Tritium Sustainment Manager, responsible for leading and conducting experiments for Tritium-Producing Burnable Absorber Rod (TP–BAR) program.
- Principal Investigator of multiscale/multiphysics laboratory-directed research and develop-
ment effort to predict and characterize environmentally-assisted intergranular fracture in Ni, where I also characterized segregation in grain-boundary engineered nickel using APT.
- Measured thermal stability, deuterium permeation and deuterium trapping of additively-manufactured stainless steels to support multiple materials qualification efforts.
- Measured deuterium permeation and trapping in Al–Cu alloys, candidate fusion materials,
and candidate barrier materials.
- Reported on the compositional variation and accelerated aging of hard Au(Co) coatings for
Postdoctoral Scholar, Sandia National Laboratories — Livermore, CA — Oct 2007 – Apr 2010
- Determined the fracture toughness and compressive behavior of ultra-ﬁne-grained Al–Mg alloys and correlated these with observations from optical and electron microscopy.
- Assisted in fabrication and calibration of a deuterium permeation instrument.
- Measured the deuterium permeability through various Al–Mg alloys, 304L stainless steel, SiC (through Ultramet’s SBIR), Au-coated Be, and other materials.
- Quantiﬁed Mg grain broundary segregation in nanocrystalline Al–Mg powders and consolidated, ultra-ﬁne-grained alloys using atom-probe tomography (APT).
Ph.D. Candidate, Northwestern University — Evanston, IL — Sep 2002 – Oct 2007
- Utilized APT and transmission elctron microscopy (TEM) to measure the composition and morphology of nanometer-scale precipitates in Al–Sc–RE (RE=Dy, Er, Y) and Al–Er.
- Measured elevated temperature creep and the ambient temperature strength (yield stress and microhardness) of Al–Sc–RE alloys and oxide-dispersion-strengthened Al–Sc(–Zr).
- Predicted mechanical performance using a novel dislocation creep model and by using APT reconstructions in dislocation dynamics simulations (DISLOC2D) of yield strength.
- Developed software for APT data analysis (ENVELOPE (originally by M. K. Miller and J. Hyde), ELLIPSOIDFIT , INTERPPT , and others).
- Helped maintain Northwestern University Center for Atom-Probe Tomography.
- Co-lead developer of refbase, a free/open source web-based reference manager.
Research Assistant, California Institute of Technology — Pasadena, CA — Jan 2000 – Sep 2002
- Programmed the SMARTS EXPERT SYSTEM to assist in neutron diffraction experiments.
- Studied beam divergence of the SMARTS neutron diffractometer.
- Assisted in collection and analysis of neutron diffraction data for residual stresses.
Research Assistant, LIGO — Hanford, WA — Jun 1999 – Sep 1999
- Formulated optimal epoxy bonding techniques to couple magnets and standoffs to test masses used in the high vacuum Laser Interferometer Gravitational Wave Observatories.
Northwestern University — Evanston, IL — Sep 2002 – Oct 2007
Doctor of Philosophy, Materials Science and Engineering
Mechanical Properties and Microstructure of Al–Sc with Rare-Earth Element or Alumina Additions
Advisors: Profs. David C. Dunand David N. Seidman
California Institute of Technology — Pasadena, CA — Sep 1998 – Jun 2002
Bachelor of Science, Engineering and Applied Science
Advisor: Prof. Ersan Üstündag