Modelling the plastic deformation of iron
The 1/2 screw dislocations in bcc iron are studied by atomistic simulations. An analytical yield criterion captures correctly the non-Schmid plastic behavior. A model Peierls potential develops a link between the atomistic modeling at 0 K and the thermally activated dislocation motion. All predicted features agree well with experimental observations. This work establishes a consistent bottom-up model that provides an insight into the microscopic origins of the plastic behavior of bcc iron.
The 1/2 screw dislocations in bcc iron are studied by atomistic simulations. An analytical yield criterion captures correctly the non-Schmid plastic behavior. A model Peierls potential develops a link between the atomistic modeling at 0 K and the thermally activated dislocation motion. All predicted features agree well with experimental observations. This work establishes a consistent bottom-up model that provides an insight into the microscopic origins of the plastic behavior of bcc iron.
| Autor: | Chen, Zhiming |
|---|---|
| ISBN: | 9783866449688 |
| Sprache: | Englisch |
| Seitenzahl: | 170 |
| Produktart: | Kartoniert / Broschiert |
| Verlag: | KIT Scientific Publishing |
| Veröffentlicht: | 13.03.2013 |
| Schlagworte: | dislocation iron plastic simulation yield |