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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
Presentation Title Phase Stability in Alloys during Severe Plastic Deformation in the High Strain Limit
Author(s) Pascal M. Bellon, Robert Averback, Yinon Ashkhenazy
On-Site Speaker (Planned) Pascal M. Bellon
Abstract Scope Mechanical alloying has become a valuable processing scheme, much studied since the seminal work of JS Benjamin over 50 years ago. Yet, no general model describes how alloy phases evolve during severe plastic deformation, whether unique steady states stabilize at high strain, and if so whether it is independent of the initial state of the system. An attractive model for describing such a driven alloy system is the effective temperature model proposed by Martin as it builds an effective potential that acts like a free energy in system driven from equilibrium. In this presentation we use computer simulation and SPD experiments on model alloys to highlight the successes and weakness of this model. We focus particular attention on the use of ternary additions to systematically vary alloy properties such as heat of mixing, shear modulus, and interphase energies.
Proceedings Inclusion? Planned:
Keywords Phase Transformations, Modeling and Simulation,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Warm Rolling Induced Microstructure Modification for Evading Strength-Ductility Trade-off in Medium Manganese Steel
Deformation Induced Hierarchical Twinning in Titanium Alloys
Deformation Mechanisms in Cu-Nb Nanolayered Composite under Pico-indentation and Tribological Testing
Deformation of Fe-Rich, Co-Free Multi-Principal Element Alloys at Multiple Strain Rates and Temperature Conditions
Dynamically Reversible Shear Transformations in a CrMnFeCoNi High-entropy Alloy
Effect of Pre-straining on High Strain Rate Compression Behavior of a Complex Concentrated Alloy Exhibiting Transformation Induced Plasticity
Exploiting Hydrogen Segregation Effects for Controlling Microstructure Evolution
Exploring Joining Mechanism for Immiscible System: Friction Stir Welding of Pure Mg and Pure Fe
Grain Refinement and Microstructural Evolution in AM High Entropy Alloys through SPD and Thermomechanical Processing
Microstructural Inelastic Deformation and Fracture Modes in Crystalline Materials
Nanostructural Hierarchy in Metallic Materials for Extended High Temperature Stability
Phase Stability in Alloys during Severe Plastic Deformation in the High Strain Limit
Processing Heterostructures Using Deformation Techniques
Role of Cold Sprayed Microstructure on Tensile and Fatigue Behavior for AA7075
Self-lubricating Ni-based Superalloy Composites Processed by Severe Plastic Deformation
The Role of Deformation Induced Defects on Phase Evolution in High Entropy Alloys
Under Pressure - Exploring the Synergy of High Pressure Deformation Mechanisms of Metals and Rocks
Universal Trend in the Non-Equilibrium Evolution of Metastable Grain Boundaries at Extreme Conditions

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