| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Crystal Plasticity Analysis of the Effect of Bi-modal Microstructure's Features of Titanium Alloy on Strain Localization |
| Author(s) |
Jian Zhang, Hongwei Li, Xinxin Sun |
| On-Site Speaker (Planned) |
Jian Zhang |
| Abstract Scope |
The features of bi-modal microstructure of titanium alloy lie in the primary equiaxial alpha and the secondary lamellar alpha. Moreover, the content, morphological distribution and interaction of them play an important role in the initiation and evolution of strain localization. To address the effect, a microstructure-based crystal plasticity finite element model was established with the bi-modal microstructure. the mechanism of dislocation strengthening was considered with the primary equiaxial alpha, and the flow softening caused by the loss of Hall-Petch strengthening was taken into account with the secondary lamellar alpha. The model was able to capture the deformation inhomogeneity and evolution of strain localization in bi-modal titanium alloy during thermomechanical working processes. With this model, the geometrically necessary dislocations at the phase interface and the global and local Schmid factor were calculated to characterize the effect of bi-modal microstructure’s features of titanium alloy on strain inhomogeneity. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |