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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Hume-Rothery Symposium on Alloy Microstructure Science and Engineering
Presentation Title William Hume-Rothery Award Lecture: Deformation Pathway Engineering and Compositionally and Structurally Modulated Alloy Design
Author(s) Yunzhi Wang
On-Site Speaker (Planned) Yunzhi Wang
Abstract Scope Shear deformations by dislocation, twinning, and structural transformation in crystalline solids and shear-banding in metallic glasses share a key feature: autocatalysis driven by long-range elastic interactions, leading to strain avalanche and stress-plateaus in stress-strain curves. To achieve desired stress-strain behavior, alloys must be microstructurally engineered to suppress autocatalysis effectively. In this presentation, we demonstrate new alloy design strategies motivated by experiment and guided by mechanism-based modeling and simulation. In particular, we show the effectiveness of compositional and structural modulations (CSM) at nanoscales in suppressing autocatalysis and tailoring stress-strain behaviors during superelastic and plastic deformations by structural transformation, deformation twinning, and dislocations. Three examples will be discussed: CSM in regulating structural transformations in shape memory alloys and high entropy alloys, CSM in controlling twinning during creep deformation in Ni-base superalloys, and CSM in managing precipitation, martensitic transformation, and dislocation activities in Ti-alloys.
Proceedings Inclusion? Planned:

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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