Polytypes of long-period stacking structures synchronized with chemical order in a dilute Mg-Zn-Y alloy
| Autor: | Abe, E., Ono, A., Itoi, T., Yamasaki, M., Kawamura, Y. |
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| Rok vydání: | 2011 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1080/09500839.2011.609149 |
| Popis: | A series of structural polytypes formed in an Mg-1at.%Zn-2at.%Y alloy has been identified, which are reasonably viewed as long-period stacking derivatives of the hcp Mg structure with alternate AB stacking of the close-packed atomic layers. Atomic-resolution Z-contrast imaging clearly revealed that the structures are long-period chemical-ordered as well as stacking-ordered; unique chemical order along the stacking direction occurs as being synchronized with a local faulted stacking of AB'C'A, where B' and C' layers are commonly enriched by Zn/Y atoms. Comment: 8 pages, 4 figures; submitted to Philosophical Magazine Letters |
| Databáze: | arXiv |
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