Abstract
Although long-period stacking ordered (LPSO) structures have been known to improve mechanical strength in Mg alloys for over a decade, only recently have LPSO crystal structure models been proposed. Using density functional theory (DFT), we explore the thermodynamic stability of two such models with Mg-Y-Zn LPSO structures of 18R and 14H types. All LPSO structures are predicted to be metastable when compared to the 0 K ground state phase diagram, which we construct from DFT calculations of 13 Mg-Y-Zn intermetallic compounds.
Original language | English (US) |
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Pages (from-to) | 798-801 |
Number of pages | 4 |
Journal | Scripta Materialia |
Volume | 67 |
Issue number | 10 |
DOIs | |
State | Published - Nov 2012 |
Keywords
- Density functional theory
- LPSO
- Magnesium alloys
- Phase diagram
- Phase stability
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys