5th International Congress on 3D Materials Science (3DMS 2021): Thursday Plenary
Program Organizers: Dorte Juul Jensen, Technical University of Denmark; Erica Lilleodden, Fraunhofer Insitute for Microstructure of Materials and Systems (IMWS); Scott Barnett, Northwestern University; Keith Knipling, Naval Research Laboratory; Matthew Miller, Cornell University; Akira Taniyama, The Japan Institute of Metals and Materials; Hiroyuki Toda, Kyushu University; Lei Zhang, Chinese Academy of Sciences

Thursday 12:00 PM
July 1, 2021
Room: Virtual A
Location: Virtual

Session Chair: Matthew Miller, Cornell University


12:00 PM  Plenary
Operando and Insitu Synchrotron Experiments Following Microstructural Evolutions: Helena Van Swygenhoven1; 1Paul Scherrer Institute & École Polytechnique Fédérale de Lausanne
     Thanks to the high brilliance and the fast detectors available at synchrotrons, operando and insitu experiments have become possible, adding the timescale to microstructural characterization techniques. Such experiments allow identification of operating mechanisms that are responsible for microstructural evolutions. This talk will demonstrate the potential of such experiments. Addressing microstructures of superelastic NiTi alloys, insitu xray diffraction experiments provide understanding why some microstructures can accommodate for changing strain paths, and why degradation during fatigue loading depends strongly on the strain path (Acta Materialia 144(2018)68 and 167(2019)149) . Addressing 3D printing, operando selected laser melting of Ti6Al4V during xray diffraction, allows to track with a time resolution of 50µs the dynamics of the á and â phases during fast heating and solidification, providing the cooling rates of each phase and the duration the â phase exists during processing. Such an experiment reveals for instance the link between the cooling rate, the scan vector length and the resulting microstructure (Materials Today, November 2019).This research is performed within the ERC Advanced Grant MULTIAX (339245), PREAMPA and the CCMX-AM3 challenge projects financed by the ETH board and the Swiss watch and precious metal industry.

1:00 PM Break