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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2018
Presentation Title Oxidation and Creep Behavior of Mo-Si-Ti Alloys
Author(s) Martin Heilmaier, Daniel Schliephake, Alexander Kauffmann, Camelia Gombola, Xiangna Cong
On-Site Speaker (Planned) Martin Heilmaier
Abstract Scope Mo-based silicides consisting of the three phases Mo<sub>ss</sub>, Mo<sub>5</sub>SiB<sub>2</sub> and Mo<sub>3</sub>Si are promising candidates for structural applications at elevated temperatures. Recently, it was found that macro-alloying of Mo-Si-B alloys by Ti allows for replacing Mo<sub>3</sub>Si by the more creep and oxidation resistant phase Mo<sub>5</sub>Si<sub>3</sub>. Furthermore, Ti causes a significant reduction in density of such alloys. However, our recent approach in the Mo-Si-Ti system also shows very encouraging results regarding oxidation and creep behavior of two-phase alloys at elevated temperatures. This talk will focus on the oxidation and creep resistance of two alloys with different – eutectic and eutectoid – phase equilibria in the ternary Mo-Si-Ti system. Microstructure evolution for both reactions was experimentally tracked regarding composition, temperature and time as well as compared to thermodynamic calculations. The oxidation (isothermal and cyclic) and creep (compression) behavior was characterized at temperatures between 800 and 1200 °C in case of the optimized microstructures.
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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