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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing Materials in Energy Environments
Presentation Title Extreme Hardness at High Temperature with a Lightweight Additively Manufactured Multi-principal Element Alloy
Author(s) Andrew Kustas, Morgan Jones, Frank DelRio, Ping Lu, Jonathan Pegues, Prashant Singh, Andrey Smirnov, Jordan Tiarks, Eric Hintsala, Douglas Stauffer, Jessica Roman-Kustas, Michael Abere, Emma White, Duane Johnson, Iver Anderson, Nicolas Argibay
On-Site Speaker (Planned) Andrew Kustas
Abstract Scope Higher melting temperature alloys can greatly increase the efficiency of turbomachinery used in grid electricity production worldwide. Existing superalloys used in components like turbine blades, bearings, and seals, remain a performance limiting factor due to their propensity for softening at temperatures often well above half their melting point. To address this critical materials challenge, we present results from integrating additive manufacturing and alloy design to guide significant improvements in material performance. We present an example of a multi-principal element alloy (MPEA) consisting of four distinct phases that exhibits high hardness and specific strength with negligible softening up to 800C, surpassing other known alloys. Density functional theory calculations reveal a thermodynamic explanation for the observed temperature-independent hardness and favorability for the formation of this multiplicity of phases. Implications for next-generation energy systems is discussed. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, High-Temperature Materials, High-Entropy Alloys


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A Discussion on Microstructural and Mechanical Characteristics of ShAPE Extruded PM2000 FeCrAl tubes
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Characterization of Novel P91&304 Graded Composite Transition Joint with Enhanced Creep Performance
Cold Spray Manufacturing of Oxide Dispersion Strengthened (ODS) Steels Using 14YWT Powders
Effects of Friction and Deformation Heating on Additively Manufactured M789 Steel during Hot Compression Tests
Effects of Ti and Si Additions on Precipitate Number Density and Radiation Resistance of Additively Manufactured Oxide Dispersion Strengthened FeCrAl
Extreme Hardness at High Temperature with a Lightweight Additively Manufactured Multi-principal Element Alloy
F-10: SEM, XRD, and EDS investagtion of Additive Manufactured 316H
F-11: Stress Relief Heat Treatment and Residual Stress Characterization for Additively Manufactured High γ’ Ni-base GammaPrint™-1100 Superalloy
F-36: Electric Field Driven 3D Printing of Actuating Fibers for Soft Robotic Applications
F-8: LPBF of Nd-based Permanent Magnets
F-9: Mechanical Property and Microstructure of Laser Powder Bed Fused Hypereutectic Al-Ce-Mg Alloy
Friction Surfacing Layer Deposition of a High Entropy Alloy
Improved Intergranular Corrosion Resistance of Laser Powder Bed Fusion Printed Stainless Steels via Feedstock Modification
In-situ Synthesis of Nitrides through Controlling Reactive Gas Atmosphere during Laser Powder Bed Fusion of FeCrAl
Influence of AM Processing on the High Temperature Tribology of Ni-based Alloys
Multi-scale Deformation Behavior of Direct Energy Deposited Stainless Steels, from Cryogenic to Room Temperature
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Process Mapping on Representative Geometries Using SS316 with Varying C Content Fabricated by Laser Powder Bed Fusion
Properties and Microstructure Evolution of Water Atomized Stainless Steel 316L Fabricated Using Binder Jet Additive Manufacturing
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Uncertainty of Microstructure in Additively Manufactured Heat Exchangers and Solar Receivers for CSP Applications
Unusually High Room and Elevated-Temperature Tensile Properties Observed in Direct Aged Wire-Arc Directed Energy Deposited Inconel 718

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