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Meeting 2014 TMS Annual Meeting & Exhibition
Symposium Symposium on High Entropy Alloys II
Sponsorship TMS Materials Processing and Manufacturing Division
TMS Structural Materials Division
TMS/ASM: Mechanical Behavior of Materials Committee
TMS: Alloy Phases Committee
Organizer(s) Peter Liaw, The University of Tennessee
Gongyao Wang, Alcoa Technical Center
M. C. Gao, National Energy Technology Laboratory
S. N. Mathaudhu
Scope This symposium will provide a new venue for presentation of research on the fundamental understanding and theoretical modeling of high-entropy alloy (HEA) processing, microstructures, and mechanical behavior.

In contrast to conventional alloys, which are based upon one principal element, HEAs have multiple principal elements, often five or more. The presence of multi-principal elements leads to simplified microstructures, which in many cases, because high mixing entropy enhances the formation of simple solid-solution phases, such as the face-centered-cubic (FCC) and body-centered-cubic (BCC) structures. Moreover, these alloys often have unprecedented tailorable properties that frequently far-surpass their conventional countpart alloy systems. Such properties in HEAs include high strength, ductility, corrosion resistance, oxidation resistance, fatigue and wear resistance. These properties will undoubtedly make HEAs of interest for use in biomedical, structural, mechanical, and energy applications. Given the novel and exciting nature of HEAs, they are poised for significant growth, not unlike the bulk metallic glass or nanostructured alloy scientific communities, and present a perfect opportunity for a new symposium.

Some of the areas to be explored include:

(1) Material fabrication and processing
(2) Nanocrystalline materials and composites based on HEAs
(3) Mechanical behavior
(4) Shear-band formation, fatigue, deformation, and fracture mechanisms
(5) Corrosion, physical, magnetic, electric, thermal, coating, and biomedical behavior
(6) Theoretical modeling and simulation
(7) Industrial applications
Abstracts Due 07/15/2013
Proceedings Plan Planned: A print-only volume
PRESENTATIONS APPROVED FOR THIS SYMPOSIUM INCLUDE

Ab Initio Modeling of High Entropy Alloys Using Special Quasirandom Structures
Ab Initio Study of FeMnNiCoCr High Entropy Alloys
AlMnCrCuFeNi Multicomponent Alloy with Superior Hardness and Corrosion Resistance
Aluminum Alloying Effects on Lattice Types, Microstructures, and Mechanical Behavior of High-entropy Alloys Systems
An Understanding of High Entropy Alloy from Phase Diagram Calculation
Characterization of Laser-deposited CoCrFeNi High Entropy Alloy Coatings
Characterization of Multicomponent Alloys Developed by Equiatomic Substitution
Characterizing Multi-component Solid Solutions Using Order Parameters and the Bragg-Williams Approximation
Development of BMG-forming High Entropy Alloy
Development of High Entropy Superalloys
Effect of Aluminum Addition on the Microstructure and Properties of Refractory High Entropy Alloys
Equal Channel Angular Extrusion Consolidation of Lightweight High Entropy Alloys
First Principles Simulation of a NiFeCrCoMn High Entropy Alloy
High Entropy Alloy Coatings by Laser Processing
High Entropy Multicomponent Alloys
High Strength and Tensile Ductility of a Face-centered-cubic High-entropy Alloy
Low Stacking Fault Energy High Entropy Alloys
Manufacturing High Entropy Alloys Using Traditional Melt Casting Techniques
Mechanical Behavior of an Al0.1CoCrFeNi High Entropy Alloy
Micro-segregation and Metastable Phase Stability of Cast Ti-Zr-Hf-Ni-Pd-Pt High Entropy Alloys
Microstructural Characterization and Mechanical Properties of Laser Deposited High Entropy Alloys
Microstructure, Phase Stability and Mechanical Behavior of Non-equiatomic FeMnNiCoCr High Entropy Alloys
Mixing Enthalpy for Alloys Including Al and Structural Enthalpy for High-entropy Alloys
Nanostructure Evolution through High-pressure Torsion and Recrystallization in a High-entropy CrMnFeCoNi Alloy
Neutron Diffraction Studies on Creep Deformation Behavior in a High-entropy Alloy CoCrFeMnNi Under High Temperature and Low Strain Rate
On the Deformation Mechanisms of a Refractory High-entropy Alloy
On the Exceptional Fracture Toughness Behavior of a High-entropy Iron-containing Alloy at Cryogenic Temperatures
Oxidation Behavior of High Entropy Alloy AlCoCrFeNi
Phase Evolution in High Entropy Alloys during Mechanical Alloying and Spark Plasma Sintering
Phase Selection in Al-Cu-Ni-Ti-Zr Alloys
Potential Applications of High-entropy Materials
Prediction of Low Temperature Phase Transitions in the High Entropy Alloy Mo-Nb-Ta-W
Stacking Fault Energies and Mechanical Properties of FCC High Entropy Alloys
Strain-rate Effects on the Structure Evolution of High Entropy Alloys
Structure and Properties of Refractory High-entropy Alloys
The Hot Corrosion Resistance Properties of AlxFeCoCrNi
The Influence of Alloy Composition on the Interrelationship between Microstructure Mechanical Properties of High Entropy Alloys with BCC/B2 Phase Mixtures
The Influence of Cu and Al on the Microstructure, Mechanical Properties and Deformation Mechanisms in the High Entropy Alloys CrCoNiFeCu, CrCoNiFeAl1.5 and CrCoNiFeCuAl1.5
The Oxidation Behavior of AlCoCrFeNi High-entropy Alloy at 1023-1323K (750-1050oC)
The Search for Lower Density High Entropy Alloys
Thermal Stability and Creep Studies of NiCoCrFe High entropy Alloy
Ultra Grain Refinement in High Entropy Alloys
Using the Statistics of Serrations in the Stress Strain Curves to Extract Materials Properties of Slowly-sheared High Entropy Alloys
Vibrational Entropy in Metallic Alloys


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