ProgramMaster Logo
Conference Tools for 2022 TMS Annual Meeting & Exhibition
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Refractory Metals
Presentation Title Refractory High Entropy Alloys for Applications in Extreme Environments
Author(s) Osman El-Atwani, Hi Vo, Matheus Tunes, Andrew Alvarado, Kevin Baldwin, Koray Iroc, Eda Aydogan, Stuart Maloy, Enrique Martinez
On-Site Speaker (Planned) Osman El-Atwani
Abstract Scope In the quest of new materials that can withstand severe irradiation and mechanical extremes for advanced applications (eg. fission reactors, fusion devices, space applications, etc.), design, prediction and control of advanced materials beyond current material designs become a paramount goal. W-based refractory high entropy alloys (HEA) have been recently developed in the context of high temperature applications. Here, we present thermal stability, mechanical properties and irradiation resistance experiments on several simulation (CALPHAD, DFT and Cluster Expansion) guided compositions of W-based refractory HEAs. In-situ TEM-annealing experiments are performed on different compositions of the HEAs and the results are compared with CALPHAD simulations and the enthalpies of mixing determined through DFT and Cluster Expansion methodologies. Ductility and strength are assessed, and in-situ TEM-irradiation and implantation experiments are performed and discussed. This work constructs a timely and urgent pathway to optimize the properties of these HEAs for different current and future applications.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Nuclear Materials, High-Temperature Materials

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Bending Creep Deformation of ODS MoLa with 0.6 vs 1.1 wt.%La
Design of BCC high-entropy alloys with low neutron absorption cross-section
Design of MoWTaTiZr Refractory Multi-principal Element Alloys
Development of Heat-Treatable Crss-Cr3Si-based Alloys: Microstructure, Oxidation, and Creep
Development of novel chromium-superalloys strengthened by B2 intermetallic precipitates
Effect of heating rate and substrate on the oxidation behavior of hafnium aluminum diboride thin films
Flexible powder production for additive manufacturing of refractory metals and alloys
Flow behavior and associated microstructures of niobium at 1200 to 1500°C
Grain boundary doping as effective method to improve mechanical properties in ultra-fine grained tungsten
Grain Boundary Segregation Engineering in Technically Pure Molybdenum Examined via Three-point Bending Tests
High-throughput Engineering of Oxidation Behavior in complex refectory alloys
Hydrogen Reduction of Cobalt(II,III) oxide to make sub-micron and micron size cobalt metal powder for WC-Co synthesis
NanoPhase Separation Sintering in Mo and Mo-W Based Systems
Nanostructured tungsten alloys for nuclear fusion
Oxidation behavior of Mo-Si-B-Al alloys at elevated temperature
Platinum-based superalloys: Combating high temperatures and aggressive environments
Realizing sub-micron tungsten and tungsten composite microstructures via deformable punch spark plasma sintering
Refractory High Entropy Alloys for Applications in Extreme Environments
Studies on the phase formation of cobalt contacted with zinc vapour
Sustainability-based Selection of Materials for Refractory High Entropy Alloys
Tensile Properties of Molybdenum & ODS MoLa Sheet at Elevated Temperatures
The influence of impurities on the interfacial chemistry of niobium – alumina high-temperature refractories
The oxidation behavior of the eutectic alloy Mo-20Si-52,8Ti in dry and wet atmospheres
Thermal stability of thin rolled potassium-doped tungsten sheets at temperatures between 1100 C and 1400 C
Thermodynamic assessment of the V-Ti-B system
Tungsten grain optimization and composite fabrication for use in fusion reactors

Questions about ProgramMaster? Contact programming@programmaster.org