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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2018
Presentation Title Mechanical Behavior of a Three-phase Mo-Si-B Alloy Produced by Reaction Synthesis
Author(s) Xiang Yu, Sharvan Kumar
On-Site Speaker (Planned) Xiang Yu
Abstract Scope Multiphase Mo-Si-B alloys containing a Mo solid solution matrix and Mo3Si and Mo5SiB2 intermetallic phases are of interest for high temperature structural applications as they project a reasonable combination of oxidation resistance, creep resistance and acceptable damage tolerance. In this work, the uniaxial tensile and compression responses at nominal strain rates from 10-3/s to 10-6/s between 900oC and 1300oC of a three-phase alloy with ~50 vol.% T2 + Mo3Si phases and produced by reaction synthesis powder processing were evaluated. An activation energy of ~400 kJ/mol suggested lattice diffusion in the Mo solid solution phase to be the rate-controlling mechanism. Tensile ductility variation with temperature was documented and fracture surfaces were characterized. Notched and fatigue-pre-cracked, three-point bend tests provided the variation of fracture toughness with temperature from room temperature to 1100oC. These results will be presented and compared to those previously reported in the literature.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


A Metallurgical Study of Pressure Resistance Welded Molybdenum Based Materials
A Study on the Potential Analogous Rhenium Effect of Manganese in Tungsten-molybdenum Alloys Prepared by Mechanical Alloying
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
Effect of Oxide Coating on the Fusion Welding of Molybdenum Tubing
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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