Azioni sul documento
Seminario: Dynamical hysteresis in plastic deformation
| Cosa | Seminario |
|---|---|
| Quando |
Mar 20, 2013 11:00
Mar 20, 2013 13:30
Mar 20, 2013 da 11:00 al 13:30 |
| Dove | Q4 P1 16 |
| Persona di riferimento | dr. Stefano Zapperi |
| Indirizzo e-mail per contatti | stefano.zapperi@ieni.cnr.it |
| Recapito telefonico per contatti | +39 02 66173 385 |
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Prof. Mikko Alava
Department of Applied Physics
Aalto University, Finland
Dislocation dynamics under external stresses has recently been understood to be intimately connected to non-equilibrium phase transitions. In idealized systems and models the crucial concept is the yield stress, which here defines a critical point. In our recent work (Laurson, Alava, Phys. Rev. Lett. 109, 155504 (2012)) we have studied what happens in the deformation of crystalline materials under time-dependent stresses. It turns out be so that this is directly connected to generic features of dynamical hysteresis in various systems, and the behavior of a model two-dimensional discrete dislocation dynamics model also tells a lot about the yielding in general and the transition in particular.
20 marzo 2013, alle ore 11:00 nella sala riunioni IENI
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