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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Refractory Metals
Presentation Title Development of Heat-treatable Crss-Cr3Si-based Alloys: Microstructure, Oxidation, and Creep
Author(s) Anke Silvia Ulrich, Petra Pfizenmaier, Uwe Glatzel, Mathias Christian Galetz
On-Site Speaker (Planned) Mathias Christian Galetz
Abstract Scope Crss-Cr3Si-based alloys are promising candidates in the field of refractory metals for high temperature applications. In comparison to the commonly used Ni-base superalloys, these materials offer possible higher working temperatures and lower densities. In addition, Cr is the only refractory metal which intrinsically builds an oxide scale suitable for protecting the alloy from detrimental oxidation. Si improves the oxide scale formation even further as well as high temperature strength by Cr3Si formation. In this study it was found, that the addition of further alloying elements such as Mo, Ge, and Pt lead to an improvement in creep properties (Mo), oxidation resistance (Ge), and nitridation resistance (Pt) by simultaneously maintaining the two-phase microstructure. Tests were conducted at temperatures up from 980 C. The microstructures, scales, and reaction products were investigated using XRD, SEM, EPMA, and Image Analysis.
Proceedings Inclusion? Planned:
Keywords High-Temperature Materials, Mechanical Properties, Environmental Effects


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
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
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
Thermal Stability of Thin Rolled Potassium-doped Tungsten Sheets at Temperatures between 1100 C and 1400 C
Tungsten Grain Optimization and Composite Fabrication for Use in Fusion Reactors

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