Cluster-based composition interpretation of dual-phase glass-crystal alloys via the example of Mg49Cu42Y9
| Autor: | Rui Chen, Yajun Zhao, Shuang Zhang, Zengrui Wang, Jianbing Qiang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Alloy Thermodynamics Binary number 02 engineering and technology Composition (combinatorics) engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Interpretation (model theory) Crystal Phase (matter) 0103 physical sciences Materials Chemistry Ceramics and Composites engineering Cluster (physics) 0210 nano-technology Eutectic system |
| Zdroj: | Journal of Non-Crystalline Solids. 566:120886 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2021.120886 |
| Popis: | Recently, the advent of dual-phase glass-crystal alloys has attracted the attention of many scholars; since Mg49Cu42Y9 in the Mg-Cu-Y system is reported to exhibit high strength, it opens up a new path for the design of new materials. However, the composition origin of this kind of alloys still puzzles everyone. In the present work, the composition of the alloy Mg49Cu42Y9, which can be considered to be related to the binary eutectic point Cu42Mg58, is thoroughly examined via the cluster-plus-glue-atom model. After strictly following the cluster-based composition analysis procedures, the basic binary eutectic composition Cu42Mg58 can be explained by the dual-cluster formula [Mg-Cu4Mg11]Cu2Mg + [Cu-Cu6Mg6]Cu = Cu14Mg19 ≈ Cu42.4Mg57.6, and thus the composition of the dual-phase alloy Mg49Cu42Y9 is explained by replacing three Mg atoms with Y ones, written as Cu14Mg16Y3 ≈ Mg48.48Cu42.42Y9.10. This cluster-based composition analysis method provides a new tool for the dual-phase alloy design. |
| Databáze: | OpenAIRE |
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