About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Microstructure-Sensitive Modeling Across Length Scales: An MPMD/SMD Symposium in Honor of David L. McDowell
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| Presentation Title |
Atomic-Scale and Mesoscale Modeling of Deformation Twinning in Hexagonal Metals |
| Author(s) |
Jian Wang |
| On-Site Speaker (Planned) |
Jian Wang |
| Abstract Scope |
Twinning is one dominant deformation mechanism in hexagonal-close-packed (HCP) metals, exhibit more complex nucleation, propagation, thickening mechanisms than those in cubic structures (FCC and BCC). Specifically, twinning and de-twinning associated with unidirectional shear cause crystallographic reorientation, develop texture and interact with other crystal defects. Twin-GBs interactions cause sequential twinning and/or dislocation slips in the neighboring grains. The activated deformation modes show strong correlation to incoming twins and the misorientation between adjacent grains. In this talk, I will focus on atomic-scale and mesoscale modeling of deformation twinning in hexagonal metals through developing the coupled crystal plasticity finite element-phase field model based on atomic understandings. Some fundamental understanding of twinning behavior based on experiments will be introduced, which really help us develop mesoscale models. These findings provide theoretical base for researchers to revisit experimental data, rebuild the frame of twinning mechanisms and advance the development of alloy design. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Magnesium |