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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Hume-Rothery Symposium on Alloy Microstructure Science and Engineering
Presentation Title Stability and Growth Kinetics of Deformation Twin Embryos in Beta Ti Alloys
Author(s) Ganlin Chen, Dian Li, Yufeng Zheng, Liang Qi
On-Site Speaker (Planned) Liang Qi
Abstract Scope Deformation twinning provides critical plastic deformation mechanisms to tune the strength and ductility of beta Ti Alloys. However, physical mechanisms that determine the types/magnitudes of twinning in these alloys are still unclear due to the complex potential energy landscape related to plastic deformations and diffusionless phase transformations. We applied computational and experimental studies to understand and tune the correlations between diffusionless phase transformations and deformation twinning in these alloys at various compositions and temperatures. First-principles calculations were performed to study the structures and energy stability of different phases related to the twinning path. Atomistic simulations with both classical and machine learning interatomic potentials were conducted to further analyze the nucleation and growth mechanisms of twin embryos in both binary alloys and multicomponent alloys. These atomistic simulation results combined with crystallographic theory can provide quantitative energetic criteria to select the twinning activities based on the phase stability in Ti alloys.
Proceedings Inclusion? Planned:
Keywords Titanium, Modeling and Simulation, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Diffuse Scattering, Displacement Short-range Ordering, and Phonons in Pre-martensitic State
A Novel Growth Mechanism of the Alpha Phase in Titanium Alloys
A Specialty Alloy Manufacturer’s Perspective of How Computation Modeling of Microstructure Evolution Can Help with Alloy Design and Product Development
CALPHAD-based Kinetic Simulations for Metallurgical Practices
Characterization and Modeling of Concurrent Precipitation in Mg-Al-Sn Alloys Using an Improved Kampmann-Wagner Numerical (KWN) Model
Combined Creep and Fatigue Modeling
Data for Quantitative Phase Field Modeling
Determination of Mechanistic Information for Simulation Schemes of Transformation Pathways and Deformation Behavior in B2/BCC Refractory Complex Concentrated Alloys
Dynamic Local Phase Transformations: A New Creep Strengthening Mechanism in Ni-Base Superalloys
Explore the Shear Component in Precipitate Plate Formation in Light Alloys
Friction-mediated Subsurface Structural Transformations
High-Throughput Experiments for Computational Thermodynamics and Kinetics
Invention and Applications of Universal Machine Learning Interatomic Potential
Is Molar Gibbs Free Energy Always a Chemical Potential?
Linkage between Microstructure and Mechanical Properties in Alpha-Beta Titanium Alloys
Linking Phenomenological Theories of Phase Transformations to First-principles Descriptions of Solids
Nucleation Mechanisms of GP Zones and η′ Precipitates in Al-Zn-Mg Alloys
On Slip Irreversibility during Cyclic Deformation of FCC Alloys
Ordering Induced Phase Stabilities and Transformation Pathways in FCC Based Complex Concentrated Alloys or High Entropy Alloys
Perspectives on Metal Science for Materials Design
Revisiting Classic Recrystallization Experiments with Modern Simulation: Understanding the Mechanisms Behind the Development of Cube Orientation in Medium to High Stacking-fault Energy FCC Metals
Self-assembled Nanostructures in Coherent Two-phase Systems: Crystallography Theory
Shuffle Transformation in Titanium Alloys
Stability and Growth Kinetics of Deformation Twin Embryos in Beta Ti Alloys
Thermodynamic and Kinetic Studies on Microstructure Changes in Additive Manufacturing
Through-process Modeling of Local Mechanical Properties of Cast Aluminum Alloys
Unlocking the Versatility of Additive Manufacturing: Alloy Development and Materials Discovery for Resource-constrained Environments Based on Commercial Feedstock Materials
William Hume-Rothery Award Lecture: Deformation Pathway Engineering and Compositionally and Structurally Modulated Alloy Design

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