About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Statistical Analysis of Forward and Lateral Transmission of Twins Across Grain Boundaries in HCP Magnesium |
Author(s) |
Arul Kumar Mariyappan, Rodney McCabe, Laurent Capolungo, Carlos Tome |
On-Site Speaker (Planned) |
Arul Kumar Mariyappan |
Abstract Scope |
A detailed statistical analysis of twin-transmission in the forward (along the twinning shear-direction) and lateral (along the direction perpendicular to both twinning plane-normal and shear-direction) directions is performed in rolled magnesium compressed along the rolling-direction (RD). EBSD images are acquired from two different cuts: a section containing the RD and normal-directions (ND) to analyze forward twin-transmission; and a section with a normal at 45 to the RD and ND to capture lateral twin-transmission. A statistical analysis of EBSD microstructures comprising thousands of twins provides the following key findings. Twinning transmission propensity decreases with increasing grain-boundary (GB) misorientation angle for both forward and lateral directions. Twin-transmission is relatively more favorable in the lateral direction compared to forward direction, and thus leads to longer twin chains in the lateral side than the forward side. GB mis-orientation axis does not seem to influence the twin-transmission for either forward or lateral transmission. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnesium, Characterization, Modeling and Simulation |