Quantcast

A variational model for dynamic recrystallization based on cosserat plasticity

Research paper by T. Blesgen

Indexed on: 14 Oct '16Published on: 13 Oct '16Published in: Composites Part B: Engineering



Abstract

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.

Figure 10.1016/j.compositesb.2016.10.005.0.jpg
Figure 10.1016/j.compositesb.2016.10.005.1.jpg
Figure 10.1016/j.compositesb.2016.10.005.2.jpg
Figure 10.1016/j.compositesb.2016.10.005.3.jpg
Figure 10.1016/j.compositesb.2016.10.005.4.jpg
Figure 10.1016/j.compositesb.2016.10.005.5.jpg