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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2018
Presentation Title A Metallurgical Study of Pressure Resistance Welded Molybdenum Based Materials
Author(s) Sean M. Instasi, Nathan Jerred, Indrajit Charit, Gary A. Rozak
On-Site Speaker (Planned) Sean M. Instasi
Abstract Scope Traditional methods of fusion welding, such as arc welding, are known to cause various undesirable effects when it comes to welding of refractory metals and alloys. Molybdenum is an important refractory metal of commercial importance. However, fusion welding of molybdenum causes embrittlement due to entrainment of impurities in the weld zone and grain growth in the heat effected zone in addition to other logistical limitations because of its poor high-temperature oxidation resistance in air. The current research focused on developing a solid state welding method, namely pressure resistance welding, for joining three molybdenum based materials, commercially pure Mo, TZM, and Mo-La<SUB>2</SUB>O<SUB>3</SUB>. Microstructural characteristics of the welded joints are examined using optical microscopy, SEM/EBSD and TEM. Mechanical properties are evaluated using Vickers microhardness and mini-tensile testing. This research is likely to provide useful information for various existing and potential applications including space nuclear reactors.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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