Effect of magnetic fields on microstructure evolution
| Autor: | Efraín Hernández-Rivera, Philip E. Goins, Mark A. Tschopp, Heather A. Murdoch |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science General Computer Science Field (physics) General Physics and Astronomy 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Engineering physics Magnetic field Condensed Matter::Materials Science Computational Mathematics Mechanics of Materials 0103 physical sciences General Materials Science Grain boundary Texture (crystalline) Crystallite 0210 nano-technology Material properties |
| Zdroj: | Computational Materials Science. 150:464-474 |
| ISSN: | 0927-0256 |
| Popis: | Tailoring microstructure evolution with the use of external forces (magnetic, electric, mechanical, etc.) can expand the ability to control material properties and performance through microstructure engineering. In particular, crystalline materials are comprised of a distribution of grains of differing sizes, crystallographic orientations (texture), and topologies, which may evolve differently under the influence of various fields and lead to changes in material properties, bounded by movable grain boundaries. In this work, simulations are used to demonstrate the effect of an applied field, in this case a magnetic field, on the evolution of microstructure at the grain scale. The simulation results show that fields can be used to control microstructure geometry and texture. They also show that a dynamic field application of the field, through a changing field direction over time, can create new microstructure features even in a system that does not seem as sensitive to as static field, and that temperature can play a key role in this evolution as well. This work overall demonstrates how unconventional processing techniques on polycrystalline microstructures can be impacted by applying fields, and ultimately be used to improve properties and performance through engineered microstructures. |
| Databáze: | OpenAIRE |
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