Dr. Christoph Kenel
    Post-Doctoral Researcher

    Current project(s):

    Phone: 847.491.5888
    Email: christoph.kenel@northwestern.edu
    Address: 2220 Campus Drive, Evanston, IL 60208

I was born in Switzerland and later got a B.S./M.S. in Materials Science and Engineering from ETH Zurich in 2012. For my Master thesis I joined the group of Christian Leinenbach at the Swiss Federal Laboratories for Materials Science and Technology (Empa) working on characterization of the deformation and failure mechanisms of high temperature brazed steel components. I returned to the Alloy Design for Advanced Processing Technologies (ADAPT) group later to work on development of oxide dispersion strengthened titanium aluminides for additive manufacturing as a PhD student until 2016. The project was performed in the frame of the multinational European Union FP7 project OXIGEN focusing on development of oxide dispersion strengthened alloys for high temperature components produced by additive manufacturing. I joined both the Dunand and Shah research groups early 2017 as a Postdoc funded by the Swiss National Science Foundation.

My research at NU focusses on the densification mechanisms of 3D-printed micro-trusses upon reduction and sintering. For this we use synchrotron-based in situ X-ray diffraction and tomography to reveal the fundamentals of reduction, densification, and interdiffusion. Currently I focus on beam-based additive manufacturing of Nickel-base super alloys with combined strengthening mechanisms.

Selected Honors

  1. Empa Research Award 2017
  2. Early Postdoc Mobility Fellowship, Swiss National Science Foundation
  3. Larry Kaufman Scholarship for the CALPHAD XLIV Conference
  4. CALPHAD Poster Award for the best poster presented at the CALPHAD XLIV Conference
  5. Best Paper Award - 2014 SFF Symposium
  6. Willi Studer Prize for the best student in the Material Science Master programme 2013

Publications

[View ORCID record]

  1. Song, B., Kenel, C., & Dunand, D. C. (2020). 3D ink-extrusion printing and sintering of Ti, Ti-TiB and Ti-TiC microlattices. Additive Manufacturing, 35, 101412.
  2. Kenel, C., Davenport, T., Li, X., Shah, R. N., & Dunand, D. C. (2020). K inetics of alloy formation and densification in Fe-Ni-Mo microfilaments extruded from oxide-or metal-powder inks. Acta Materialia, 193, 51-60.
  3. Glerum, J. A., Kenel, C., Sun, T., & Dunand, D. C. (2020). Synthesis of precipitation-strengthened Al-Sc, Al-Zr and Al-Sc-Zr alloys via selective laser melting of elemental powder blends. Additive Manufacturing, 36, 101461
  4. J. Peng, I. Witting, N. Geisendorfer, M. Wang, M. Chang, C. Kenel, A. Jakus, R.N. Shah, J. G. Snyder, M. Grayson, 3D-Extruded Composite Thermoelectric Threads for Flexible Energy Harvesting, Nature Com-munications 10 (2019) 5590
  5. S.A. Shevchik, G.G. Masinelli, C. Kenel, C. Leinenbach, K. Wasmer, Deep learning for in situ and real-time quality monitoring in additive manufacturing using acoustic emission, IEEE Transactions on Industrial Informatics. (2019) 1-1.
  6. C. Kenel, N.P.M. Casati, D.C. Dunand, 3D ink-extrusion additive manufacturing of CoCrFeNi high-entropy alloy microlattices, Nature Communications 10 (2019) 904.
  7. J.R. Croteau, S. Griffiths, M.D. Rossell, C. Leinenbach, C. Kenel, V. Jansen, D.N. Seidman, D.C. Dunand, N.Q. Vo, Microstructure and mechanical properties of Al-Mg-Zr alloys processed by selective laser melting, Acta Mater. (2018). doi:10.1016/j.actamat.2018.04.053.
  8. S.A. Shevchik, C. Kenel, C. Leinenbach, K. Wasmer, Acoustic emission for in situ quality monitoring in additive manufacturing using spectral convolutional neural networks, Additive Manufacturing 21 (2018) 598-604. doi:10.1016/j.addma.2017.11.012.
  9. M. Fechner, A. Sukhov, L. Chotorlishvili, C. Kenel, J. Berakdar, N.A. Spaldin, Magnetophononics: Ultrafast spin control through the lattice, Phys. Rev. Mater. 2 (2018). doi:10.1103/PhysRevMaterials.2.064401.
  10. C. Kenel, D. Grolimund, X. Li, E. Panepucci, V.A. Samson, D.F. Sanchez, F. Marone, C. Leinenbach, In situ investigation of phase transformations in Ti-6Al-4V under additive manufacturing conditions combining laser melting and high-speed micro-X-ray diffraction, Sci. Rep. 7 (2017). doi:10.1038/s41598-017-16760-0.
  11. K. Wasmer, C. Kenel, C. Leinenbach, S.A. Shevchik, In Situ and Real-Time Monitoring of Powder-Bed AM by Combining Acoustic Emission and Artificial Intelligence, in: M. Meboldt, C. Klahn (Eds.), Ind. Addit. Manuf. - Proc. Addit. Manuf. Prod. Appl. - AMPA2017, Springer International Publishing, Cham, 2018: pp. 200–209. doi:10.1007/978-3-319-66866-6_20.
  12. K. Arnold, G. Tatlock, C. Kenel, A. Colella, P. Matteazzi, High temperature isothermal oxidation behaviour of an Oxide dispersion strengthened derivative of IN625, Mater. High Temp. 0 (2017) 1–10. doi:10.1080/09603409.2017.1393145.
  13. C. Kenel, A. Lis, K. Dawson, M. Stiefel, C. Pecnik, J. Barras, A. Colella, C. Hauser, G.J. Tatlock, C. Leinenbach, K. Wegener, Mechanical performance and oxidation resistance of an ODS ?-TiAl alloy processed by spark plasma sintering and laser additive manufacturing, Intermetallics. 91 (2017) 169–180. doi:10.1016/j.intermet.2017.09.004.
  14. C. Kenel, G. Dasargyri, T. Bauer, A. Colella, A.B. Spierings, C. Leinenbach, K. Wegener, Selective laser melting of an oxide dispersion strengthened (ODS) ?-TiAl alloy towards production of complex structures, Mater. Des. (2017). doi:10.1016/j.matdes.2017.08.034.
  15. C. Kenel, K. Dawson, J. Barras, C. Hauser, G. Dasargyri, T. Bauer, A. Colella, A.B. Spierings, G. J. Tatlock, K. Wegener, C. Leinenbach: Microstructure and oxide particle stability in a novel ODS ?-TiAl alloy processed by spark plasma sintering and laser additive manufacturing, Intermetallics (2017):63-73. doi: 10.1016/j.intermet.2017.07.004
  16. N. Kalentics, E. Boillat, P. Peyre, C. Gorny, C. Kenel, C. Leinenbach, J. Jhabvala, R.E. Logé; 3D Laser Shock Peening - A new method for the 3D control of residual stresses in Selective Laser Melting, Mater. Des. 130 (2017) 350–356. doi:10.1016/j.matdes.2017.05.083.
  17. J. Mathew, C. Hauser, P. Stoll, C. Kenel, D. Polyzos, D. Havermann, W. MacPherson, D. Hand, C. Leinenbach, A. Spierings, K. Koenig-Urban, R. Maier: Integrating fibre Fabry-Perot cavity sensor in to 3D printed metal components for extreme high temperature monitoring applications, IEEE Sens. J. PP (2017): 1–1. doi:10.1109/JSEN.2017.2703085.
  18. A. Lis, C. Kenel, C. Leinenbach: Characteristics of reactive Ni3Sn4 formation and growth in Ni-Sn interlayer systems, Metallurgical and Materials Transactions A 47(2016):2596-2608. doi:10.1007/s11661-016-3444-4
  19. C. Kenel, P. Schloth, S.V. Petegem, J.L. Fife, D. Grolimund, A. Menzel, H. Van Swygenhofen, C. Leinenbach: In situ synchrotron X-ray diffraction and small angle X-ray scattering studies on rapidly heated and cooled Ti-Al and Al-Cu-Mg alloys using laser-based heating, JOM (2016):1–7. doi:10.1007/s11837-015-1774-0.
  20. C. Kenel, D. Grolimund, J.L. Fife, V.A. Samson, S. Van Petegem, H. Van Swygenhoven, C. Leinenbach: Combined in situ synchrotron micro X-ray diffraction and high-speed imaging on rapidly heated and solidified Ti–48Al under additive manufacturing conditions, Scripta Materialia 114(2016):117-120. doi:10.1016/j.scriptamat.2015.12.009.
  21. C. Kenel, C. Leinenbach: Influence of Nb and Mo on microstructure formation of rapidly solidified ternary Ti-Al-(Nb, Mo) alloys. Intermetallics 11/2015; 2016(69):82. doi:10.1016/j.intermet.2015.10.018
  22. M. Koster, A. Lis, W.J. Lee, C. Kenel, C. Leinenbach: Influence of elastic–plastic base material properties on the fatigue and cyclic deformation behavior of brazed steel joints. International Journal of Fatigue 08/2015; 82: 49-59. doi:10.1016/j.ijfatigue.2015.07.029
  23. A.B. Spierings, C. Leinenbach, C. Kenel, K. Wegener: Processing of metal-diamond-composites using selective laser melting. Rapid Prototyping Journal 03/2015; 21(2015):130-136. doi:10.1108/RPJ-11-2014-0156
  24. C. Kenel, C. Leinenbach: Influence of cooling rate on microstructure formation during rapid solidification of binary Ti-Al alloys. Journal of Alloys and Compounds 03/2015; 637(2015):242-247. doi:10.1016/j.jallcom.2015.03.016
  25. M. Koster, C. Kenel, W.J. Lee, C. Leinenbach: Digital Image Correlation for the Characterization of Fatigue Damage Evolution in Brazed Steel Joints. Procedia Materials Science 12/2014; 3:1117-1122. doi:10.1016/j.mspro.2014.06.182
  26. M. Koster, C. Kenel, A. Stutz, W.J. Lee, A. Lis, C. Affolter, C. Leinenbach: Fatigue and cyclic deformation behavior of brazed steel joints. Materials Science and Engineering A 12/2013; 581: 90–97. doi:10.1016/j.msea.2013.05.083