13–17 Sept 2021 Virtual Conference
Virtual
Europe/Vienna timezone
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How to characterise mixing during HPT?

16 Sept 2021, 10:50
20m
Room 14

Room 14

Oral Presentation C14. Thermomechanical processing, severe plastic deformation & nanostructuring C14_Thermomechanical processing, severe plastic deformation & nanostructuring

Speaker

Dr Roman Kulagin (Institute of Nanotechnology, Karlsruhe Institute of Technology)

Description

Many leading laboratories worldwide are currently using high pressure torsion (HPT) as a method for creating new materials by mixing metallic components in solid state. At the initial stage of deformation, mechanical mixing is carried out exclusively by changing the shape of the constituent components without any interaction between them at the atomic level. This mechanical mixing is called stirring. By itself, "good" stirring does not guarantee that at the next stages of mixing the components will form new alloys, but if "poor" stirring occurs, then mixing is also improbable. That is why a fundamental study of stirring is of prime importance. The talk will consider an example of the quantitative characterisation of the degree of stirring based on the modified Gibbs coefficient. In addition, the main features of solid state stirring will be analysed.

Acknowledgements
Authors acknowledge support from The Volkswagen Foundation through the Cooperation Projects Az.:97 751 "Trilateral Partnerships between Scholars and Scientists from Ukraine, Russia and Germany".

Speaker Country Germany

Authors

Dr Roman Kulagin (Institute of Nanotechnology, Karlsruhe Institute of Technology) Prof. Yan Beygelzimer (Donetsk Institute for Physics and Engineering named after O.O. Galkin, National Academy of Sciences of Ukraine) Dr Andrey Mazilkin (Institute of Solid State Physics Russian Academy of Sciences Chernogolovka) Dr Torsten Scherer (Institute of Nanotechnology, Karlsruhe Institute of Technology) Dr Matthias Mail (Institute of Nanotechnology, Karlsruhe Institute of Technology) Dr Oleksandr Davydenko (Donetsk Institute for Physics and Engineering named after O.O. Galkin, National Academy of Sciences of Ukraine) Dr Brigitte Baretzky (Institute of Nanotechnology, Karlsruhe Institute of Technology) Prof. Boris Straumal (Institute of Solid State Physics Russian Academy of Sciences Chernogolovka) Prof. Yuri Estrin (Department of Materials Science and Engineering, Monash University)

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