About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
The morphology of three-dimensional twin networks in Ti: connectivity between twins and mechanical incompatibilities |
Author(s) |
Duncan A. Greeley, Hi Vo, Rodney McCabe, Carlos Tomé, Laurent Capolungo |
On-Site Speaker (Planned) |
Duncan A. Greeley |
Abstract Scope |
The mechanical response of HCP metals is mediated by the formation of 3D twin domain networks during deformation. Naturally, twin interactions are salient morphological features of these networks. To study the morphology of twin networks and assess the likely impact of twin to twin and twin to grain boundary contact on the development of mechanical incompatibilities, a 3D twin network in cryogenically compressed high-purity Ti was characterized using serial sectioned EBSD. The network structure and induced shear incompatibilities at twin intersections were investigated, and interface accommodation mechanisms for the incompatibilities are examined. The network displays a complex morphology centered around ‘hub’ twins that display over 15 intergranular and intragranular contacts. The magnitude of incompatibility depends on the 3D orientation of the twins and interfaces. Critically, the study reveals that high incompatibilities appear to emanate from incidental contact between separate twin chains. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, Other |