| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2020
|
| Presentation Title |
Twin Transmission Across Grain Boundaries in Mg |
| Author(s) |
Carlos N. Tome, M Arul Kumar, John Graham, Khanh Dang, Yue Liu, Pengzhang Tang, Shujuan Wang, Rodney McCabe, Laurent Capolungo |
| On-Site Speaker (Planned) |
Carlos N. Tome |
| Abstract Scope |
Transmission of {1012}<1011> mechanical twins across grain boundaries in Mg is a mechanism that can facilitate intergranular crack propagation by providing a path to cracks along along the twin interface. Until now the focus has been on a 2D characterization of twin transmission along the forward propagation direction. Recent 3D studies of the twin domain interface reveal anisotropic mobility and a relative easiness of lateral twin propagation as opposed to forward or normal propagation. Here we study the forward and the lateral twin transmission into neighbors applying a variety of experimental and computational characterization techniques, namely: (1) statistical EBSD analysis of twin sections; (2) Phase Field simulations of twin growth; (3) 3D Molecular Dynamic simulations of twins reacting with grain boundaries. This study improves our understanding of the transmission mechanisms in a 3D aggregate, and helps us to develop criteria for treating twin modeling in CP simulations. |
| Proceedings Inclusion? |
Planned: |