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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Mechanical Behavior at the Nanoscale VI
Presentation Title H-13: Dynamic Mechanical Properties of High-entropy Alloys
Author(s) Aomin Huang
On-Site Speaker (Planned) Aomin Huang
Abstract Scope Multi-principal elements alloys with more than five components, namely high-entropy alloys (HEAs) have been extensively studied due to their excellent mechanical properties as promising structural materials. As novel alloys, excellent performances such as high strength at both cryogenic and high-temperature conditions, great resistance toward classic strength-ductility trade off, have been found in recent studies. However, most emphases have been placed to study their mechanical properties subjected to low strain-rate which leads to insufficient understanding of their properties at high strain-rate condition. In the present study, compression tests with varying strain rates and temperatures are performed on split-Hopkinson pressure bar (SHPB) system to establish their microstructure evolution and deformation mechanisms. Here, we report on a novel method to improve dynamic properties by introducing multiple strengthening mechanisms such as microband, martensitic transformation, and forest hardening.
Proceedings Inclusion? Planned:
Keywords Mechanical Properties, High-Entropy Alloys, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Achieving Micron-scale Plasticity and Theoretical Strength in Silicon
Analyzing Lamellar Level Correlations between Mechanical Behavior and Composition in Mouse Bone
Atomistic Mechanism of Stress Modulated Phase Transition in Monolayer MoTe2
Competing Behavior of Slip and Fracture on the Nanomechanical Response of Pharmaceutical Materials
Correlation of Crack Propagation with Mechanical Properties of Parent Phases and Softened Phases in Bearing Steels under Rolling Contact Fatigue
Deciphering the Deformation Mechanisms of Nanocrystalline-nanotwinned Metals in Hall-Petch Breakdown Regime
Deformation Twins in BCC Metals - Atomic Level Origins
Development of Neural Network Potential for MD Simulation and Evaluation of Mechanical Property
Direct Measurement of Adhesion for Noble-metal Nanoparticles Using In Situ Transmission Electron Microscopy
Direct Observation of Intermittent Dislocation Motions and Deformation Mechanisms in Nanocrystalline Molybdenum
Dynamic Recrystallization-induced Strengthening in Amorphous-nanocrystalline Silver-nickel Nanolaminates
Fracture of Two-dimensional Materials
Grain Size Dependent Deformation Mechanisms in Complex Concentrated Oxides (Co,Cu,Mg,Ni,Zn)O
H-12: Atomistic Modeling of the Mechanical Behavior of Gradient Nanoglasses
H-13: Dynamic Mechanical Properties of High-entropy Alloys
Impact of Hydrogen on Dislocation Nucleation and Strength in bcc Fe-Cr Alloys
In Situ Atomic-scale Observation of Surface-diffusion-controlled Softening in Metallic Nanocrystals
In Situ Nanomechanical Testing to Understand the Role of Grain Boundary Structure in Materials
In Situ Nanomechanics of Deformation Twinning
In Situ Nanoscale Mechanical Testing to Isolate the Effect of Grain Boundary and Linear Complexions
Investigating Role of Interfaces on Deformation Behavior of Metallic Nanolaminates Using Dislocation Dynamics Simulations
Ligament-size Effect of Time-dependent Plasticity in Nanoporous Gold under Controlled Surface Coated Layer
Mechanical Behavior and Microstructure Evolution in a Nanocrystalline Tri-immiscible Alloy
Mechanical Behavior of Free-standing and Matrix-embedded Metallic Nanoparticles at Different Temperatures
Mechanical Behavior of Nanotwinned Al Alloys at Elevated Temperatures
Mechanical Behavior of Optimized Transparent Nanomultilayers
Mechanistic-design of Multilayered Metal-metal and Metal-ceramic Nanocomposites for Tunable Strength and Toughness
Mechanistic-design of Multilayered Nanocomposites: Hierarchical Metal-MAX Materials for Tunable Strength and Toughness
Micro-mechanical Characterization of Geometric and Defect Dependent Responses in 3D Kirigami Polymer Structures
Molecular Dynamics Modeling of Helium Nanobubble Growth in Irradiated Copper Matrix
Molecular Dynamics Simulations on Nanosuspension Droplet Impact
Nano-mechanical Behavior Associated with Dislocation-boundary Interaction Characterized though Nanoindentation and TEM In-situ Straining
Nanoscale Characterization of Electrochemical-mechanical Mechanisms with Electron Microscopy
Nanostructured Metallic Glasses from Colloidal Nanoparticles
NOW ON-DEMAND ONLY – Atomistic Simulation of Amorphous/Crystalline Metal Composite Interface Mechanical Behavior by Nanoindentation
NOW ON-DEMAND ONLY – Measuring and Understanding Nanoscale Adhesion and Deformation Using Iin Situ Experiments in a Transmission Electron Microscope
On the Nanoscale Mechanics of Basal Dislocations in MAX Phases: Atomistic Modeling of Structure and Mobility
Orientation Dependence of Strength and Ductility in Nanolaminates Containing Interfaces with Three Dimensional Character
Precipitate Looping and Shearing at the Nanoscale
Precipitation Hardening in BCC Multilayer Thin Films
Strain-rate Dependent Deformation Mechanisms in Multilayer Cu/Mo Thin Films
The Complexity of Deformation Twinning
The Effects of Grain Boundaries on the Micromechanical Properties of Transparent Nanocrystalline Spinel
The Evolution of Deformation Twinning in a Heterogeneous Planar Fault Energy Landscape
The Role of Thin Film Architecture to Enhance Fracture Resistance
Theoretical Development of Continuum Dislocation Dynamics with Reactions: Preliminary Results
Thermal Stability of Nanocrystalline NiYZr Alloys
Tribochemical Formation of Diamond-like Carbon Films on Catalytically-active Noble Alloys
Tuning the Fracture Toughness of Polymer-infiltrated Nanoparticle Films via Nanoconfinement
Understanding the Local Structure-property Relationships of Pb-Sn Solders in Terrestrial vs. Microgravity Environments
Understanding the Role of Surface Faceting in Metallic Nanoparticles via In Situ TEM Compression
Visualizing Nanoscale Contacts In Situ: History-dependent Adhesion of Si-Si and MoS2-MoS2 Interfaces

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