Ke An

Ke An

Materials and Engineering Initiative Lead and IAP Liaison, Senior Neutron Scattering Scientist - VULCAN

Bio

Dr. Ke An is a Senior Staff and the Lead Scientist of the VULCAN instrument at SNS. He also serves as the neutron scattering Materials and Engineering Initiative Lead and Industrial Liaison of the industry application program of SNS and HFIR. 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.

Research interests and activities are in neutron scattering studies of material systems under temperature, magnet, current, and complex loading, etc.; electrochemical performance, durability and reliability of energy storage/conversion materials; residual stress; fatigue life prediction of structural materials under complex loading; and scientific instrumentation and scientific software development.
Current research includes residual stress and deformation behavior of structural materials including additively manufactured alloys, high strength steel, lightweight alloys; deformation and structural (phase/twinning) transition magnetic shape memory materials; thermal mechanical integrity of critical engineering materials by high spatial resolution neutron diffraction; synthesis, structure, stability and degradation of energy storage and energy conversion materials.

Experiences
Lead Materials and Engineering Initiative, NScD, 2017.10-present.
Industrial Liaison, Industry Application Program, Shull Wollan Center, ORNL and UTK, 2016-present.
Lead Scientist, VULCAN, Spallation Neutron Source, ORNL, 2011-present.
Adjunct Associate Professor, Department of Materials Science, University of Tennessee, Knoxville, 2012-present.
R&D Staff 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.

Educations

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.

Awards

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, 2013-2016.
Editorial Board Member, Scientific Reports.

Publications

Full publications list can be found in the profiles below.
ResearchGate
http://www.researchgate.net/profile/Ke_An
ORCID
http://orcid.org/0000-0002-6093-429X

Selected Journal Publications
Y Chen, Y.Q. Cheng, J.C. Li, M. Feygenson, W. T. Heller, C. Liang, K. An, Lattice-cell orientation disorder in complex spinel oxides, Advanced Energy Materials, 2017, backcover.
H. Huang, Y. Wu, J. He, H. Wang, X. Liu, K. An, W. Wu and Z. Lu, Phase-transformation Ductilization of Brittle High-entropy Alloys via Metastability engineering, Advanced Materials, 2017.
Q. Xie, J. Liang, A. Stoica, R. Li, P. Yang, Z. Zhao, J. Wang, H. Lan, R. Li, K. An, In-situ neutron diffraction study on the tension-compression fatigue behavior of a twinning induced plasticity steel, Scripta Materialia, 2017.
H. Li , Y. V. Aulin, L. Frazer, E. Borguet, R. Kakodkar, J. Feser, Y. Chen, K. An, D. A. Dikin, F. Ren, Structure Evolution and Thermoelectric Properties of Carbonized Polydopamine Thin Films, ACS Applied Materials & Interfaces, 2017.
F Ren, R. Schmidt, J. K. Keum, B. Qian, E. D. Case, K. C. Littrell and K. An, In situ neutron scattering study of nanoscale phase evolution in PbTe-PbS thermoelectric material, Applied Physics Letter, 2016.
W. Wu, Y. Gao, N. Li, C. M. Parish, W. Liu, P. K. Liaw, and K An, Intragranular Twinning, Detwinning, and Twinning-Like Lattice Reorientation in Magnesium Alloys, Acta Materialia, 2016.
H. Liu, Y Chen, S. Hy, K. An, S. Venkatachalam, D. Qian, M. Zhang, Y.S. Meng. ,Operando Lithium Dynamics in the Li-Rich Layered Oxide Cathode Material via Neutron Diffraction, Advanced Energy Materials, 2016.
B. Qiu, M. Zhang, L. Wu, J. Wang, Y. Xia, D. Qian, H. Liu, S. Hy, Y. Chen, K. An, Y. Zhu, Z. Liu, Y. S. Meng, Gas-solid interfacial modification of oxygen activity in layered oxide cathodes for lithium-ion batteries, Nature Communications, vol 7, 2016.
H. Wang, Y. Chen, Z. D. Hood, G. Sahu, A. S. Pandian, J. K. Keum, K. An, C. Liang, An Air‐Stable Na3SbS4 Superionic Conductor Prepared by a Rapid and Economic Synthetic Procedure, Angewandte Chemie International Edition, 2016.
E. Cakmak, M.M. Kirka, T.R. Watkins, R.C. Cooper, K. An, H. Choo, R.R. Dehoff, S.S. Babu, Microstructural and Micromechanical Characterization of IN718 Theta Shaped Specimens Built with Electron Beam Melting, Acta Materialia, 2016.
D. Yu, K. An, X. Chen, H. Bei,Phase-specific deformation behavior of a NiAl-Cr (Mo) lamellar composite under thermal and mechanical loads, J. Alloy. Comp, 2016.
W. Wu, K. An,Understanding Low-cycle Fatigue Life Improvement Mechanisms in a Pre-twinned Magnesium Alloy, J. Alloy. Comp, 2016
Y. Chen, E. Rangasamy, C. D. Cruz, C. Liang, K. An, A Study of Suppressed Formation of Low-Conductive Phases in Doped Li7La3Zr2O12 Garnets by in-situ Neutron Diffraction, J. Materials Chemistry A, 2015.
Y Chen, E Rangasamy, C Liang, K An, Origin of high Li+ conduction in doped Li7La3Zr2O12 garnets, Chemistry of Materials, 2015
Y Chen, L Cai, Z Liu, CR Dela Cruz, C Liang, K An, Correlation of anisotropy and directional conduction in β-Li3PS4 fast Li+ conductor, Applied Physics Letters, 2015
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
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.
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.
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.
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.

Specialized Equipment

VULCAN, the engineering materials diffractometer.
https://neutrons.ornl.gov/vulcan

User Facility

SNS