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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2018
Presentation Title Microstructure and Mechanical Properties of Cr-Si High-temperature Alloys
Author(s) Yuki Aono, Toshihiro Omori, Ryosuke Kainuma
On-Site Speaker (Planned) Yuki Aono
Abstract Scope Cr alloys have potential as heat-resistant materials because of the higher melting point and lower density of Cr compared to those of Ni-base superalloys. In the Cr-Si system, the Cr<SUB>3</SUB>Si (A15) phase is equilibrated with the Cr solid solution phase, and it has been reported that addition of Si can improve the oxidation resistance of Cr alloys. However, there are few reports on the mechanical properties of Cr-Si alloys. In this study, the microstructure and mechanical properties of Cr-Si alloys were investigated. Compression tests were conducted in hypoeutectic and eutectic Cr-Si alloys in vacuum environment, and it was found that Cr-13at%Si hypoeutectic alloy show the highest 0.2% proof stress of 526MPa at 1000℃ among the investigated alloys. Its specific strength is 78.1 Nm/g at 1000℃ which is twice as high as that of Ni-based Mar-M247 alloy.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


A Metallurgical Study of Pressure Resistance Welded Molybdenum Based Materials
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Alloying Behaviour and Properties of Tetragonal Nb5Si3
Assessments of the Mo-Si-X-(B) System for High Temperature Structural Application Potentials
Characteristics of Dynamic Abnormal Grain Growth in Mo and Ta
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Fabrication of Tungsten Nanopowder by Combustion-based Method
Fracture Toughness Evaluation and Microstructural Characterization of Drawn Tungsten Wires
High Ductility in Bulk Polycrystalline Tungsten Produced by Equal Channel Angular Extrusion
High Temperature Oxidation Behaviors of Refractory Complex Concentrated Alloys (RCCAs)
Mechanical Behavior of a Three-phase Mo-Si-B Alloy Produced by Reaction Synthesis
Microstructure and Mechanical Properties of Cr-Si High-temperature Alloys
On the Design and Selection of Nb In Situ Composites
Opportunities for BCC Refractory-metal-based Superalloys
Oxidation and Creep Behavior of Mo-Si-Ti Alloys
Oxidation Resistance of W Substituted Mo-Si-B
Synthesis of MoC-graphite Composite by High-energy Ball Milling
Tensile Response of Binary Mo-Si Solid Solution Alloys

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