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Hellen Jiang

Hellen Jiang

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Dr. Hellen Jiang is a materials scientist in the Applied Materials Processing group in EED. She assists the group by developing various materials and processing methods for different applications via understanding of processing-microstructure-properties relationships. Her current projects include developing soft magnetic materials, lightweight materials, and steels using different manufacturing techniques. Prior to joining PNNL in 2014, she researched optimizing rare-earth and rare-earth-free magnetic materials produced using non-equilibrium processing by tuning alloy compositions and processing parameters. She has extensive experience in magnetic materials design and selection and prediction of properties using microstructural features. She has presented over 20 talks at various professional conferences and workshops.

Research Interests

  • Processing-microstructure-properties relationships
  • Developing and understanding non-equilibrium processing, including friction stir welding/processing, extrusion, and cold spray of various materials
  • Understanding weldment behavior of ferrous alloys under corrosive environments, such as water and for nuclear applications
  • Magnetron sputtering of thin films for different applications
  • Understanding and optimizing dissimilar materials joining

Education and Credentials

  • Ph.D., in Materials Engineering, University of Nebraska-Lincoln, NE
  • M.S., in Materials Science, North China Electric Power University (NCEPU), Beijing, China
  • B.S., in Materials Science and Engineering, NCEPU, Beijing, China

Affiliations and Professional Service

  • Minerals, metals and materials society (TMS)
  • IEEE

Awards and Recognitions

  • Outstanding performance award, PNNL, 2016
  • Excellent reviewer award, PNNL, 2016
  • Top poster presentation award, PNNL, 2015
  • Outstanding performance award, PNNL, 2014
  • IEEE student travel grant, IEEE, 2011
  • Outstanding thesis, NECPU, 2010
  • Outstanding (top 3%) Student in NCEPU, 2004-2008
  • Excellent (top 3%) Student Award in Beijing, 2005
  • National Student Excellence Award, China, 2003

PNNL Publications


  • Jiang X., N.R. Overman, C.B. Smith, and K.A. Ross. 2020. "Microstructure, hardness and cavitation erosion resistance of different cold spray coatings on stainless steel 316 for hydropower applications." Materials Today Communications 25. PNNL-SA-153058. doi:10.1016/j.mtcomm.2020.101305
  • Wang T., D. Ramirez Tamayo, X. Jiang, P. Kitsopoulos, W. Kuang, V. Gupta, and E.I. Barker, et al. 2020. "Effect of interfacial characteristics on magnesium to steel joint obtained using FAST." Materials & Design 192, no. 2020:108697. PNNL-SA-150237. doi:10.1016/j.matdes.2020.108697


  • Devaraj A., W. Wang, V.R. Vemuri, L. Kovarik, X. Jiang, M.E. Bowden, and J.R. Trelewicz, et al. 2019. "Grain Boundary Segregation and Intermetallic Precipitation in Coarsening Resistant Nanocrystalline Aluminum Alloys." Acta Materialia 165. PNNL-SA-135423. doi:10.1016/j.actamat.2018.09.038
  • Jiang X., N.R. Overman, N.L. Canfield, and K.A. Ross. 2019. "Friction stir processing of dual certified 304/304L austenitic stainless steel for improved cavitation erosion resistance." Applied Surface Science 471. PNNL-SA-138166. doi:10.1016/j.apsusc.2018.11.177


  • Glass S.W., M.R. Larche, M.S. Prowant, J.D. Suter, J.P. Lareau, X. Jiang, and K.A. Ross. 2018. "Cold Spray NDE for Porosity and Other Process Anomalies." In AIP Conference Proceedings, 1949, Paper No. 020010. College Park, Maryland:AIP. PNNL-SA-128840. doi:10.1063/1.5031507
  • Jayaraman T.V., V.M. Meka, X. Jiang, N.R. Overman, J. Doyle, J.E. Shield, and S. Mathaudhu. 2018. "Investigation of structural and magnetic properties of rapidly-solidified iron-silicon alloys at ambient and elevated temperatures." Journal of Alloys and Compounds 741. PNNL-SA-129202. doi:10.1016/J.JALLCOM.2018.01.088
  • Overman N.R., X. Jiang, R.K. Kukkadapu, T. Clark, T.J. Roosendaal, G.W. Coffey, and J.E. Shield, et al. 2018. "Physical and electrical properties of melt-spun Fe-Si (3-8 wt%) soft magnetic ribbons." Materials Characterization 136. PNNL-SA-129219. doi:10.1016/j.matchar.2017.12.019


  • Jiang X., S.A. Whalen, J.T. Darsell, S. Mathaudhu, and N.R. Overman. 2017. "Friction Consolidation of Gas-Atomized Fe-Si Powders for Soft Magnetic Applications." Materials Characterization 123. PNNL-SA-120598. doi:10.1016/j.matchar.2016.11.026
  • Nandipati G., X. Jiang, V.S. Vemuri, S. Mathaudhu, and A. Rohatgi. 2017. "Self-Learning Kinetic Monte Carlo Simulations of Diffusion in Ferromagnetic a-Fe-Si alloys." Journal of Physics: Condensed Matter 30, no. 3:Article No. 035903. PNNL-SA-124267. doi:10.1088/1361-648X/aa9774
  • Overman N.R., S.A. Whalen, M.E. Bowden, M.J. Olszta, K. Kruska, T. Clark, and E.L. Stevens, et al. 2017. "Homogenization and Texture Development in Rapidly Solidified AZ91E Consolidated by Shear Assisted Processing and Extrusion (ShAPE)." Materials Science and Engineering. A. Structural Materials: Properties, Microstructure and Processing 701. PNNL-SA-122981. doi:10.1016/j.msea.2017.06.062


  • Choi Y., X. Jiang, W. Bi, P. Lapa, R.K. Chouhan, D. Paudyal, and T. Varga, et al. 2016. "Element-resolved magnetism across the temperature- and pressure-induced spin reorientation in MnBi." Physical Review B 94, no. 18:184433. PNNL-SA-118447. doi:10.1103/PhysRevB.94.184433

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