Affordable Access

Access to the full text

Microstructure evolution in deformed polycrystals predicted by a diffuse interface Cosserat approach

Authors
  • Ask, Anna1
  • Forest, Samuel2
  • Appolaire, Benoît3
  • Ammar, Kais2
  • 1 Onera, BP 72, Châtillon CEDEX, 92322, France , Châtillon CEDEX (France)
  • 2 MINES ParisTech, PSL University, Centre des matériaux (CMAT), CNRS UMR 7633, BP 87, Evry, 91003, France , Evry (France)
  • 3 Institut Jean Lamour, CNRS-Université de Lorraine, 2 allée André Guinier, Nancy, 54000, France , Nancy (France)
Type
Published Article
Journal
Advanced Modeling and Simulation in Engineering Sciences
Publisher
Springer International Publishing
Publication Date
Feb 26, 2020
Volume
7
Issue
1
Identifiers
DOI: 10.1186/s40323-020-00146-5
Source
Springer Nature
Keywords
License
Green

Abstract

Formulating appropriate simulation models that capture the microstructure evolution at the mesoscale in metals undergoing thermomechanical treatments is a formidable task. In this work, an approach combining higher-order dislocation density based crystal plasticity with a phase-field model is used to predict microstructure evolution in deformed polycrystals. This approach allows to model the heterogeneous reorientation of the crystal lattice due to viscoplastic deformation and the reorientation due to migrating grain boundaries. The model is used to study the effect of strain localization in subgrain boundary formation and grain boundary migration due to stored dislocation densities. It is demonstrated that both these phenomena are inherently captured by the coupled approach.

Report this publication

Statistics

Seen <100 times