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Spring 2014
Seven Ni-WC tubular wires utilized in this study were characterized by the nickel sheath area, powder composition, and overall initial carbide volume fraction of the wire prior to welding. The electrical resistivity of steel, stainless steel, and Ni-WC welding consumables were measured from...
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Fall 2016
Chrome carbide samples prepared using submerged arc welding procedures were subjected to physical abrasion testing in a modified machine similar to the ASTM G65 standard, in an investigation of media particle shape contribution to abrasive wear. The primary intent of this study was to determine...
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Spring 2017
Heat distribution measurements in Gas Metal Arc Welding (GMAW) were concurrently measured at the cathode and anode giving increased insight and prediction capabilities. A calorimeter and water cooled cathode were used to determine energy partitions in GMAW for various electrodes, currents,...
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Spring 2017
In submerged arc welding (SAW), the welding takes place under a flux bed. The physical phenomena taking place under the flux bed is crucial in determining the quality of the final weld. The presence of the flux layer prevents the direct visibility of the weld zone during welding; this limitation...
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Microstructural Characterization of Chromium Carbide Overlays and a Study of Alternative Welding Processes for Industrial Wear Applications
DownloadSpring 2014
Microstructural features of chromium carbide overlays (CCOs) were examined in this work. It was found that the microstructures can contain unmelted alloy powders. It was also shown that the structures of the primary M7C3 carbides are long hexagonal rods. Change in the microstructure from the top...