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Designing High Corrosion Resistant Peritectic Magnesium Alloys via Sc and Y Addition.
- Source :
- Metallurgical & Materials Transactions. Part A; May2020, Vol. 51 Issue 5, p2509-2522, 14p, 7 Diagrams, 4 Charts, 11 Graphs
- Publication Year :
- 2020
-
Abstract
- With the help of density functional theory (DFT) calculations, Mg-Sc-Y alloys with various Y content were designed and produced. The single-phase Mg-Sc-Y alloys were composed of a typical peritectic microstructure with internal Sc-rich zones surrounded by Y-rich zones. With increasing Y content, the hydrogen evolution rates decreased significantly to 0.13 mL/cm<superscript>2</superscript>/day and increased slightly afterward. This was attributed to the combined effect of a decrease in the thermodynamic driving force for corrosion, surface layer improvement, and an increase in the number of galvanic couples between the Sc-rich and Y-rich zones. [ABSTRACT FROM AUTHOR]
- Subjects :
- MAGNESIUM alloys
DENSITY functional theory
Subjects
Details
- Language :
- English
- ISSN :
- 10735623
- Volume :
- 51
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Metallurgical & Materials Transactions. Part A
- Publication Type :
- Academic Journal
- Accession number :
- 142553404
- Full Text :
- https://doi.org/10.1007/s11661-020-05693-5