The role of the interface distribution in the decomposition of metastable L10-Mn54Al46
| Autor: | F. Bittner, T.G. Woodcock, Ludwig Schultz |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
education.field_of_study Materials science Mechanical Engineering Population Metals and Alloys Nucleation Recrystallization (metallurgy) Thermodynamics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Crystallography Equilibrium phase Mechanics of Materials Metastability 0103 physical sciences Materials Chemistry Grain boundary 0210 nano-technology education Electron backscatter diffraction |
| Zdroj: | Journal of Alloys and Compounds. 727:1095-1099 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.08.197 |
| Popis: | The decomposition of the thermodynamically metastable τ phase in MnAl has been studied using electron backscatter diffraction. The results showed that the nucleation of the equilibrium phase, β-Mn, in mechanically worked and recrystallized τ-Mn 54 Al 46 occurred preferentially at general grain boundaries, while twin-like defects displayed higher resistance against nucleation. Static recrystallization led to a change in the population of types of interface where the content of general grain boundaries is increased greatly. The reduced stability of mechanically worked τ compared to as-transformed τ is therefore attributed to a combination of recrystallization and selective nucleation at general grain boundaries. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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