Ke An

Position: Lead Instrument Scientist

Instrument: Engineering Materials Diffractometer

Group: Engineering Materials

Division: Chemical and Engineering Materials Division

Contact: or (865) 576-2185

Dr. Ke An is the Lead Scientist of the VULCAN instrument at SNS. Dr. An also holds an Adjunct Associate Professor position at the Department of Materials Science, the University of Tennessee, Knoxville. Dr. An is specialized on the application of neutron scattering in materials science and engineering including residual stress, deformation mechanism, phase transformation, and texture, etc. His current research focuses on structure of energy storage and conversion materials and deformation behavior in functional and engineering materials by using the advanced neutron scattering technique. Dr. An earned Ph.D. from Virginia Tech in 2003, and since then he works at Oak Ridge National Laboratory.

  • Lead Scientist, VULCAN, Spallation Neutron Source, ORNL, 2011-present.
  • Adjunct Associate Professor, Department of Materials Science, University of Tennessee, Knoxville, 2012, 12-present.
  • Staff R&D Scientist / Instrument Scientist, VULCAN, SNS, ORNL, 2008-2011.
  • Research Associate, NRSF2/VULCAN, HFIR/SNS, ORNL, 2005-2008.
  • Research Visitor, NRSF2, ORNL Advanced Short Term Research Opportunity, 2004.


  • Ph.D. Department of Engineering Science and Mechanics, Virginia Tech, 2003.
  • M.S. Department of Chemical Engineering, Tianjin University, 2000.
  • B.S. Department of Chemical Engineering, Tianjin University, 1998.
  • B.S. Department of Management, Tianjin University, 1998.

Selected Publications

  1. W. Wu, P.K. Liaw, K. An, Real-Time In-Situ Neutron Diffraction Study on Low-Cycle Fatigue Behavior of a Wrought Magnesium, Acta Materialia, 85, 343-353, 2015
  2. G. Stoica, A. D. Stoica, K. An, D. Ma, S. Vogel, J. Carpenter and X. Wang, Extracting Grain-Orientation Dependent Data from In-Situ Time-of-Flight Neutron Diffraction – I. Inverse Pole Figures, Journal of Applied Crystallography, 47, 6, 2019-2029, 2014.
  3. D. Yu, K. An, Y. Chen, X. Chen, Revealing cyclic hardening mechanism of a transformation induced plasticity steel by real-time in situ neutron diffraction, Scripta Materialia, 89, 45-48, 2014.
  4. D. Yu, H. Bei, Y. Chen, E. P. George and K. An, Phase-specific deformation behavior of a relatively tough NiAl-Cr(Mo) lamellar composite, Scripta Materialia, 84, 59-62, 2014. Y. Chen, L. Yang, F. Ren, K. An, Visualizing the Structural Evolution of LSM/xYSZ Composite Cathodes for SOFC by in-situ Neutron Diffraction, Scientific Reports, 4, 5179, 2014.
  5. G. Sahu, E. Rangasamy, J. Li, Y. Chen, K An, N. Dudney, and C. Liang, A High-Conduction Ge Substituted Li3AsS4 Solid Electrolyte with Ex-ceptional Low Activation Energy, J. Material Chemistry A. 2,10396-10403, 2014, backcover.
  6. S. Wang, Y. Chen, S. Fang, L. Zhang, M. Tang, K. An, K. S. Brinkman, F. Chen, Novel chemically stable complex perovskite proton conductor: Improved proton conductivity by tuning the cation ordering, Chemistry of Materials, 2014, 26(6): 2021-2029.
  7. W. Wu, K An, L Huang, S.Y. Lee, and P. K. Liaw, Deformation Dynamics Study of a Wrought Magnesium Alloy by Real-time In-Situ Neutron Diffraction. Scripta Materialia. Vol 69, pp 358-361, 2013.
  8. L. Cai, Z. Liu, K. An, C. Liang, Unraveling Structural Evolution of LiNi0.5Mn1.5O4 by In-situ Neutron Diffraction, Journal of Materials Chemistry A, vol 1, pp 6980-6914, 2013. L. Cai, K. An, Z. Feng, C. Liang, S.J. Harris, In-Situ Observation of Inhomogeneous Degradation in Large Format Li-Ion Cells by Neutron Diffraction. Journal of Power Sources, 2013, vol 236, 15, pp. 163-168.
  9. T.R. Watkins, H.Z. Bilheux, K.An, E.A. Payzant, R.R. Dehoff, C.E. Duty, W.H. Peter, C.A. Blue, C.A. Brice, Neutron Characterization for Additive Manufacturing, Advanced Materials & Processes 171[3], 23-27 (2013).
  10. A. Pramanick, J. Jones, G. Tutuncu, D. Ghosh, A. Stoica and K. An, Strain incompatibility and residual strains in ferroelectric single crystals Scientific Report. 2:929, 2012.
  11. X. L. Wang, K. An, L. Cai, Z. Feng, S. Nagler, C. Daniel, K. Rhodes, A. Stoica, H. Skorpenske, C. Liang, W. Zhang, J. Kim, Y. Qi, and S. Harris , Visualizing the chemistry and structure dynamics in lithium-ion batteries by in-situ neutron diffraction. Scientific Report 2:747, 2012.
  12. E. Cakmak, H. Choo, K. An, R. Yang, A Synchrotron X-ray Diffraction Study on the Phase Transformation Kinetics and Texture Evolution in a TRIP Steel Subjected to Torsional Loading, Acta Materialia, 60(19), 6703-6713, 2012.
  13. D. Maurya, A. Pramanick, K. An and S. Priya, Enhanced piezoelectricity and nature of electric-field induced structural phase transformation in textured lead-free piezoelectric Na0.5Bi0.5TiO3-BaTiO3 ceramics, APL, 2012,100, pp 172906.
  14. A. Pramanick, K. An, A.D. Stoica, and X.L. Wang , Twin-variant reorientation strain in Ni-Mn-Ga single crystal during quasi-static mechanical compression, Scripta Materialia, 2011, Volume: 65, Issue: 6, Pages: 540-543.
  15. K. An, H.D. Skorpenske, A.D. Stoica, Dong Ma, X.L. Wang, and E. Cakmak, “First in-situ lattice strains measurements under load at VULCAN”, Metallurgical and Materials Transactions A, 2011, Volume 42, Number 1, Pages 95-99.
  16. K. An, and K.L. Reifsnider, C.Y. Gao "Durability of (Pr0.7Sr0.3)MnO3δ/8YSZ Composite Cathodes for Solid Oxide Fuel Cells." J. of Power Sources, 2006, Vol 158/1 pp 254-262.
  17. Woo, W., Feng, Z., Wang, X-L., An, K., Hubbard, C. R., and David, S. A., Choo, H.,“In-situ neutron diffraction measurements of transient temperature and stress fields in a thin plate”, Appl. Phys. Lett., 2006, 88, 261903.
  18. X. Chen, K. An, and K.S. Kim, "Low-cycle Fatigue of 1Cr-18Ni-9Ti Stainless Steel and Related Weld Metal under Axial, Torsional and 90o Out-of-phase Loading." Fatigue & Fracture of Engineering Material & Structure, 2004, 27, 439-448.


Awards, Honors and Memberships

  • Significant Event Award, ORNL, 2013
  • Siemens Teachers as Researchers Mentor Performance Award, 2011
  • Supplemental Performance Award, NSSD, ORNL, 2009
  • Excellence in Science and Technology Research and Development, Ministry of Education, China, 2003
  • Excellence in Science and Technology Research and Development, Government of Tianjin, China, 2002
  • The Minerals, Metals & Materials Society, Structural Materials Division, Mechanical Behaviors of Materials Committee 2013-.
  • The Minerals, Metals & Materials Society, Young Professional Committee 2013-.
  • Committee Member of Scientific and Technical Advisory Panel (STAP) for the Materials and Engineering Diffractometer Instrument at ESS, 2013-.


Lara-Curzio, E., An, K., Dudney, N., Baker, F. S., Armstrong, B., Contescu, C. I., and Kiggans, J, “Lightweight, durable lead-acid batteries” (U.S. Patent No. 8,017,273, Sept, 13, 2011).