Generalized stacking fault energies, ductilities, and twinnabilities of CoCrFeNi-based face-centered cubic high entropy alloys
| Autor: | M. Asle Zaeem, M. Beyramali Kivy |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering High entropy alloys Metals and Alloys Thermodynamics 02 engineering and technology Cubic crystal system 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Crystallography Mechanics of Materials Diffusionless transformation 0103 physical sciences General Materials Science Density functional theory Dislocation 0210 nano-technology Crystal twinning Ductility Stacking fault |
| Zdroj: | Scripta Materialia. 139:83-86 |
| ISSN: | 1359-6462 |
| Popis: | Effects of Cu, Mn, Al, Ti, Mo on generalized stacking fault energies, Rice-criterion ductilities, and twinabilities of CoCrFeNi-based face-centered cubic high entropy alloys were investigated using density functional theory calculations. The calculated barrier energies and twinnabilities revealed that the addition of Ti or Mo increased the tendency of dislocation glide and deformation twinning, while addition of Mn, Cu and relatively high amount of Al facilitated dislocation gliding and martensitic transformation. Low amount of Al resulted in only dislocation gliding. Furthermore, the addition of Mn and Cu increased the calculated Rice-criterion ductility while other elements decreased it. |
| Databáze: | OpenAIRE |
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