On the role of Sm in solidification of Al-Sm metallic glasses
| Autor: | G.B. Bokas, L. Zhao, J. H. Perepezko, Izabela Szlufarska |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Kinetics Population FOS: Physical sciences Thermodynamics 02 engineering and technology 01 natural sciences Molecular dynamics 0103 physical sciences General Materials Science Supercooling education 010302 applied physics Condensed Matter - Materials Science Range (particle radiation) education.field_of_study Amorphous metal Mechanical Engineering Metallurgy Metals and Alloys Materials Science (cond-mat.mtrl-sci) Computational Physics (physics.comp-ph) 021001 nanoscience & nanotechnology Condensed Matter Physics Amorphous phase Sphere packing Mechanics of Materials 0210 nano-technology Physics - Computational Physics |
| Zdroj: | Scripta Materialia. 124:99-102 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2016.06.045 |
| Popis: | During the solidification of Al-Sm metallic glasses the evolution of the supercooled liquid atomic structure has been identified with an increasing population of icosahedral-like clusters with increasing Sm concentration. These clusters exhibit slower kinetics compared to the remaining clusters in the liquid leading to enhanced amorphous phase stability and glass forming ability (GFA). Maximum icosahedral-ordering and atomic packing density have been found for the Al90Sm10 and Al85Sm15 alloys, respectively, whereas minimum cohesive energy has been found for the Al93Sm7 which is consistent with the range of compositions (from Al92Sm8 to Al84Sm16) found experimentally with high GFA. |
| Databáze: | OpenAIRE |
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