Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5455458 | Materials Science and Engineering: A | 2017 | 13 Pages |
Abstract
In this paper, a through process crystal plasticity-static recrystallization model to simulate hot compression in AA6063 is presented. A new temperature and strain-rate dependent hardening model is proposed and implemented in an in-house rate-dependent crystal plasticity framework. Using experimental Electron Backscatter Diffraction (EBSD) results, the modified crystal plasticity framework is calibrated, verified and further validated with experimental hot compression results from 400 °C to 600 °C and from 0.001 sâ1 to 10 sâ1 on AA6063. The proposed hardening model successfully captures the flow behavior from AA6063 hot compression results at various temperatures and strain-rates. Subsequently, the texture and resolved shear stress results from crystal plasticity framework are used as inputs to an integration point based static recrystallization (SRX) model. SRX model first finds possible nucleation sites and then grows them to reduce the stored energy in the system. SRX model is used to predict the recrystallized textures and grain size after hot compression in AA6063. Predicted texture and grain size at various temperatures and strain-rates are compared to experimental 2D XRD and optical microscopy results. The predicted results show good agreement with corresponding experimental data.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Usman Ali, Daniel Odoh, Waqas Muhammad, Abhijit Brahme, Raja K. Mishra, Mary Wells, Kaan Inal,