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About this Symposium

Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Vacancy Engineering in Metals and Alloys
Sponsorship TMS Structural Materials Division
TMS Materials Processing and Manufacturing Division
TMS: Shaping and Forming Committee
TMS: Phase Transformations Committee
TMS: Integrated Computational Materials Engineering Committee
Organizer(s) Michael L. Falk, Johns Hopkins University
Timothy P. Weihs, Johns Hopkins University
Arun Devaraj, Pacific Northwest National Laboratory
Christopher R. Hutchinson, Monash University
Marc Weber, Washington State University - Pullman
Sreenivas Raguraman, Johns Hopkins University
Homero Reyes Pulido, Johns Hopkins University
Bharat Gwalani, North Carolina State University
Scope This symposium highlights vacancy engineering in metals and alloys, focusing on controlling vacancy defects to enhance material properties. While vacancies have been recognized for over a century, recent advancements in detection and theory have uncovered their potential to improve mechanical, thermal, and electronic properties. The event will unite experts to discuss the fundamentals of vacancy behavior, including formation, migration, and interactions with solutes in alloys, as well as cutting-edge characterization methods like positron annihilation, 4D-STEM, and Atom Probe Tomography. Key applications in structural materials will be explored, emphasizing vacancy-induced transformations that improve strength, ductility, fatigue, and creep resistance. Additionally, the symposium will dive into the role of vacancies in radiation environments, crucial for nuclear materials. By enabling interdisciplinary dialogue, the symposium seeks to define the next steps for translating vacancy engineering research into practical applications and promoting new research collaborations to solve critical challenges in this area.
Abstracts Due 07/29/2025
Proceedings Plan Planned:

PRESENTATIONS APPROVED FOR THIS SYMPOSIUM INCLUDE


A Combined Physics-Based and Data-Driven Prediction of Vacancy Formation Energies in Refractory Non-Dilute Random Alloys
Assessing the Mechanical Properties of Iron Aluminides: Strength and Brittle-to-Ductile Transition
Assessing Vacancy-Solute Clustering and Void Nucleation in Magnesium Alloys Via Transition Interface Sampling
Design of Radiation-Resistant Dilute Alloys Using Synergistic Solutes to Trap Vacancies
Direct Simulation of Vacancy Transport During Creep Deformation in Coupled Extreme Environments
Dynamic Microstructure Stabilization via Self-Organization on Grain Boundaries in Dilute Nanocrystalline Alloys
Effect of Sn Microalloying and Vacancies on Diffusion of Zr in Aluminum
Enhancing Radiation Tolerance via Defect Engineering
Grain Boundary Migration During Irradiation and Oxidation of Alloys
High Strength and Ductile, Single-Phase, Refractory Multi-Principle-Element Alloys (RMPEAs) by Theory-Guided Tailoring: Effects of Chemical Short-Range Order, Vacancies, and Hydrogen
How Alloying Elements Shape Vacancy-Induced Solute Clustering in Binary Magnesium Alloys
Hydrogen's Influence on Vacancy Diffusion in Metals: Inhibitor or Catalyst?
Influence of Thermo-Mechanical Processing on Ordering Kinetics in 18 Karat Red Gold Alloy
Insights of Nano-Void Nucleation and Solute Aggregation in Magnesium Alloys Using Transition Interface Sampling
Investigating Nanocavity Formation Kinetics in Irradiated Materials Through Elemental Segregation
Irradiation-Enhanced Transport in Model Oxides: Insights From Isotopic Tracers and Atom Probe Tomography
Modeling the Potential Energy Landscape of Vacancies in Nickel Superalloys Using Atomistic Simulations and Machine Learning
Multiscale Modeling of Vacancy Trapping and Clustering Kinetics in Multicomponent Alloys
Nanoscale Vacancy Mapping in Metals by Four-Dimensional Scanning Transmission Electron Microscopy (4D-STEM)
Positron Annihilation Spectroscopy in Mg and Mg-Alloys
Quantifying Irradiation Damage With 4D-STEM
Stabilizing Solute Clusters in Low-Alloy Steels: Effects of Excess Vacancies and Impurity Interactions
Time–Temperature Superposition for the Spall Strength of Light Metals With Nonequilibrium Vacancy Concentrations
Vacancy-Driven Irradiation-Induced Amorphization and Crystallization in Nanostructured Materials
Vacancy-Driven Phase Stability Phenomena in Ion Irradiated Alloys
Vacancy-Mediated Diffusion in Complex Materials Quantified With Machine Learning
Vacancy and Self-Interstitial Radiation Defects in Fusion Power Plant Materials and Their Effect on Reactor Operation.
Vacancy Evolution in Structural Alloys and High-Entropy Ceramics Under Extreme Irradiation Conditions


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