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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Advanced Real Time Optical Imaging
Presentation Title High-temperature Microscopy Incorporating Differential Thermal Analysis
Author(s) Rian Johannes Dippenaar, Suk-Chun Moon, Dominic Phelan
On-Site Speaker (Planned) Rian Johannes Dippenaar
Abstract Scope We have used high temperature microscopy to study in-situ solidification in very thin specimens in a radial temperature gradient by the use of a concentric solidification technique, while solid-state phase transitions have been observed on the surface of polished specimens. However, it is difficult to relate observations made on the surface to events occurring in the bulk of a specimen. Bulk events are generally characterized by thermal analysis, but these techniques are unable to for example, identify the number and location of nucleation events or the growth kinetics of specific interfaces. We have recently incorporated thermal analysis functionality into a high-temperature microscope. In-situ observations can now be directly related to events occurring in the bulk, and observed events on the surface can be used to better understanding bulk events. New insights that have been obtained along with the technical features of this newly developed technique will be discussed.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Agglomeration Behavior of Non-metallic Inclusions in Liquid High Carbon Steel
Agglomeration of Non-metallic Inclusions at the Liquid Steel/Ar Gas Interface: A Summary of In-situ Observation Experiments and a Theoretical Study
Current State Art of Double Hot Thermocouple Technology—Novel Way for the Study of Mold Flux High-temperature Properties
Determining Metastable Phase Transformation Temperature between Al4Sm-beta and Al4Sm-gamma
Direct Observation of Iron Solidification under Molten Slag
High-temperature Microscopy Incorporating Differential Thermal Analysis
In-situ Microscopic Study of Natural Hematite over Repeated Reduction-oxidation Gas Exposures
In-situ Observation of Reduction or Oxidation of Molten CaO-FeOx-SiO2 Oxides at 1573 K
In-situ Observation of Sulfide Formation during Solidification in Fe-Cr-Ni-Mn-S Alloys
In-situ Studies of Selective Oxidation in Advanced High Strength Steels
In Situ Observation of Dissolution of Oxide Inclusions in Steelmaking Slags
Insitu Tensile Performance of P91 Steel in CO2 Environment, Utilizing Small Samples and a Confocal Microscope
Introduction to Advanced Real Time Optical Imaging
Investigation of Integrated Recycling Waste Heat and Slag Resources Using Single Hot Thermocouple Technique
Localized Concentration of Metal Cations of Steelmaking Slags and its Visualization Using Confocal Laser Scanning Microscope
Mass Transfer in High-temperature Laser Confocal Microscopy
Observations of Ferrite Formation and Growth in Inclusion-engineered Low Alloy Steels during In-situ Heat Treatments
Real-time Observation of Solution Growth Interface of SiC Using Alloy Solvent
Real Time Observation of High Temperature Metallurgical Phenomenon at the University of Leuven
Thermal Imaging Furnace for the Investigation of the Molten State
Using High-temperature Confocal Scanning Laser Microscopy to Study Transient Phenomena: Swelling and Spontaneous Emulsification
Wettability of Graphite-alumina Composites against Molten CaO-SiO2-Al2O3-MgO Slags
Wetting, Spreading and Penetrating Behavior of Slags in Contact with Refactory Ceramics

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