On the quantitative characterization of weld microstructures
| Autor: | Noah M. Kohlhorst, Ji-Cheng Zhao, Roger Miller, Govindarajan Muralidharan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metals and Alloys Refractory metals chemistry.chemical_element 02 engineering and technology Welding 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Curvature 01 natural sciences Grain size Characterization (materials science) law.invention chemistry Mechanics of Materials law Molybdenum 0103 physical sciences General Materials Science Grain boundary Composite material 0210 nano-technology |
| Zdroj: | Scripta Materialia. 182:62-67 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2020.02.026 |
| Popis: | A new technique to calculate spatial variations of grain shape, grain size, and grain boundary curvature in the fusion zone (FZ) of refractory metal alloys has been developed. This technique was applied to quantitatively evaluate changes in microstructures of simulated molybdenum welds available in the literature. Use of this technique showed that a 50% increase in weld speed more than doubled the fraction of grain segments oriented between 0° and 30° to the normal to the weld direction along with a decrease in grain size from approximately 120 µm to 84 µm in the weld direction at the FZ centerline. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect