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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
Presentation Title Exploiting Hydrogen Segregation Effects for Controlling Microstructure Evolution
Author(s) Haoxue Yan, C. Cem Tasan
On-Site Speaker (Planned) Haoxue Yan
Abstract Scope Even ppm levels of hydrogen in metals can change behaviors of crystallographic defects, such as dislocations and grain boundaries. Here, we propose that such effects of hydrogen can be used to regulate microstructure evolution. In this presentation, we show that a gradient microstructure can be achieved in commercially pure aluminum by introducing hydrogen during recrystallization treatments. To understand the fundamental aspects of this approach, we study the relationship between recrystallization driving force and hydrogen content. The effect of hydrogen on recrystallization kinetics are also examined via scanning differential calorimetry analyses and discussed in terms of Turnbull’s classical rate equation for interface migration. The applicability of the proposed approach in other metal systems will be discussed. This work suggests new strategies to overturn the detrimental effects of hydrogen into opportunities for designing beneficial microstructures.
Proceedings Inclusion? Planned:

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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