ProgramMaster Logo
Conference Tools for 2023 TMS Annual Meeting & Exhibition
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Alloy Behavior and Design Across Length-Scales: An SMD Symposium Honoring Easo George
Presentation Title Utilizing Nanoprecipitates to Modulate Phase Transformation, Strength, and Ductility of HEAs
Author(s) Ying Yang, Eva Zarkadoula, Easo George
On-Site Speaker (Planned) Ying Yang
Abstract Scope Solid solution high-entropy alloys (HEAs) with the face-centered cubic (fcc) structure can exhibit extensive tensile ductility and excellent toughness, but their room-temperature strength tends to be low. To increase strength, obstacles to dislocation motion such as precipitates are typically added. However, with few exceptions, they tend to embrittle the materials. Precipitates, in addition to spatially confining dislocations and increasing strength, can also retard phase transformation. In this presentation, we will demonstrate a strategy that utilizes computational thermodynamics and kinetics to control nanoprecipitate characteristics, thereby to independently tune both phenomena. The precipitates, by synergistically modulating the strength and transformation of the HEA matrix, produce alloys with improved strength and ductility. We will also discuss molecular dynamics simulation results to show how individual variables such as precipitate size, spacing, volume fraction, and/or the chemical driving force of matrix phase transformation can affect deformation mechanisms.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Mechanical Properties, Phase Transformations


Ambient-temperature Plasticity of Brittle Intermetallics at Micron-meter Size Scales
Challenges in the Design of Refractory Multi-principal Element Alloys
Deformation Mechanisms in Compositionally Complex Polycrystalline CoNiCr-based Superalloys
Deformation Twinning in HCP Ti: The Role of Interfacial Complexions and Interstitial Solutes
Easo George – Advancing Understanding of Mechanical Behavior through Test Material Preparation
Easo George - Recollections of His Youth
Factors Affecting Mechanical Twinning in Single-phase FCC and Polycrystalline MEAs and HEAs
Fracture Properties of High-entropy Alloys
From Superplasticity in Steels to the Great Pyramid of Giza
Functional High Entropy Alloys
Future Prospects of MoSiBTiC Alloys as Ultra-High Temperature Materials
Heat-Resistant Cr-Alloys, Microstructure, Oxidation and Creep
Low Temperature Deformation Mechanisms of CrMnFeCoNi High-entropy Alloy Polycrystals
Physical Metallurgy and Mechanical Properties of Iridium and Platinum Alloys Used in Power and Heat Sources Onboard Interplanetary Spacecraft
Predicting High Entropy Alloy Phase Stability across Length Scales
Solid Solution Hardening Effects on Thermal Stability and Mechanical Properties of Nanostructured Ni-enriched CrMnFeCoNi High Entropy Alloys
Some Unusual Aspects of the Deformation Behavior of FeAl
Strong Effects of Tiny Compositional Changes on Structural and Functional Material Properties
The Interplay between Phase Transformation and Mechanical Properties in High Entropy Alloys
Theory-guided Design of High-strength, Ductile, Single-phase BCC High Entropy Alloys
Utilizing Nanoprecipitates to Modulate Phase Transformation, Strength, and Ductility of HEAs

Questions about ProgramMaster? Contact