Berlin 2018 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 8: Topical session (Symposium EPS and MM): Mechanical Properties at Small Scales

MM 8.2: Vortrag

Montag, 12. März 2018, 12:15–12:30, TC 006

Multi-scale modeling of dislocations behavior in molybdenum — •Sergei Starikov^1,2 and Vasily Tseplyaev¹ — ¹Joint Institute for High Temperatures, Moscow, Russia — ²ICAMS, Ruhr-Universität Bochum, Germany

Various types of computer simulation were performed for study of dislocations behavior in molybdenum. Molybdenum is typical body-centered cubic metal and such study allows to understand basic properties of plasticity in bcc metals. Multi-scale approach consists from combination of different methods which one calculates properties at various scales. We used three different models: development of an interatomic potential on the basis of ab-initio calculations; molecular dynamics simulations; dislocation dynamics. Such multi-scale approach allows us to investigate the dislocation properties in molybdenum and compare the simulation results with the available experimental data. Particular attention is given to the link between models at various scales and calculations of macroscopic features (like stress-strain curve).