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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2016
Presentation Title The Initiation and Propagation of Dynamic Abnormal Grain Growth in Refractory Metals
Author(s) Philip Noell, Eric Taleff
On-Site Speaker (Planned) Philip Noell
Abstract Scope Large abnormal grains were produced in molybdenum (Mo) through plastic deformation at elevated temperatures in the vicinity of 0.6 TH. Without concurrent plastic deformation, significantly higher temperatures are required to initiate abnormal grain growth in this material. The process of producing abnormal grain growth through plastic deformation is known as dynamic abnormal grain growth (DAGG). DAGG stops when plastic deformation ceases. The growth of some, but not all, abnormal grains produced by DAGG can resume during static annealing for extended periods of time. These grains grow much more slowly during static annealing and do not grow into undeformed regions. The influence of microstructure and abnormal grain orientation on growth during static annealing following DAGG will be discussed.
Proceedings Inclusion? Planned: A print-only volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Effect of Silicon on Texture of Niobium
Etched Surface of CVTD Single Crystal Tungsten Coating after Serving under High Temperature
Fracture of Severely Plastically Deformed Niobium and Tantalum
High Temperature Properties of Directionally Solidified Nb-rich Nb-Si-Cr Eutectics
Improving the Performance of Nb-Silicide Based Refractory Alloys through a Novel Cold Crucible Directional Solidification
Influences of Rare Earth on Microstructures and Mechanical Properties of Functionally Graded Cemented Carbides
Introduction of Precisely Controlled Microstructural Defects into SRF Cavity Nb Sheet and Their Impact on Local Superconducting Properties
Manufacturing of Bulk Ultrafine Grain Tungsten from Nanocrystalline Tungsten Powder and Its Potential Application for Nuclear and Fusion Reactors
Mechanical Properties of Cold-rolled Tungsten at Different Strain Rates
Micro-Mechanical Characterization of Micro-Architectured Refractory Metal Coatings
Micromechanical Testing of Multi Compositional Tungsten Thin Film Alloys
Microstructure and Properties of a Ternary Eutectic Mo-Si-B Alloy
On Plasticity of Polycrystalline Rhenium at Room Temperature
Reactive Spark Plasma Sintering of Tungsten Borides Using Elemental Tungsten and Boron Powders
Size Effect of Intermetallic Compounds on Fracture Toughness of Mo-Si-B Alloys
Stress Accommodation in Plastic Zone Ahead Crack Tip in Iridium
The Initiation and Propagation of Dynamic Abnormal Grain Growth in Refractory Metals
Thermally Activated Deformation Processes in Body-Centered Cubic Cr – How Microstructure Influences Strain-Rate Sensitivity

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