A variational model for dynamic recrystallization based on Cosserat plasticity
Composites Part B: Engineering. Bd. 115. Elsevier BV 2017 S. 236 - 243
Erscheinungsjahr: 2017
ISBN/ISSN: 1359-8368
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1016/j.compositesb.2016.10.005
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Inhaltszusammenfassung
A hardening model within the framework of finite-strain Cosserat crystal plasticity is extended to dynamic recrystallization. The new model includes an Avrami equation to account for softening, a level set equation to represent the propagation of the domain walls, and the Ambrosio-Tortorelli approach inherited from image analysis to identify the grain dislocation structure. Numerically, flow curves are computed and the Hall-Petch relation is studied.
Klassifikation
DFG Fachgebiet:
Materialwissenschaft
DDC Sachgruppe:
Mathematik
