Micromechanics reveal strain rate dependent transition between dislocation mechanisms in a dual phase high entropy alloy
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866914960738615296 |
|---|---|
| author | Kalácska, Szilvia Sharma, Amit Ramachandramoorthy, Rajaprakash Vida, Ádám Tropper, Florian Pero, Renato Frey, Damian Maeder, Xavier Michler, Johann Ispánovity, Péter Dusán Kermouche, Guillaume |
| author_facet | Kalácska, Szilvia Sharma, Amit Ramachandramoorthy, Rajaprakash Vida, Ádám Tropper, Florian Pero, Renato Frey, Damian Maeder, Xavier Michler, Johann Ispánovity, Péter Dusán Kermouche, Guillaume |
| contents | An equimolar NiCoFeCrGa high entropy alloy having dual-phase homogeneous components was studied, where the constituent phases exhibit distinct mechanical properties. Micropillars with various diameters were created from two differently heat treated samples, then they were compressed at slow strain rates, that revealed the material's limited sensitivity to size. On the other hand, increased strain rate sensitivity at high deformation speeds was observed, that differs substantially depending on the phase composition of the specimen. Dislocations within the two phases were studied by high resolution transmission electron microscopy and high angular resolution electron backscatter diffraction. The performed chemical analysis confirmed that slow cooling during casting create Cr-rich precipitates, that have significant impact on the global strength of the material. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_20368 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Micromechanics reveal strain rate dependent transition between dislocation mechanisms in a dual phase high entropy alloy Kalácska, Szilvia Sharma, Amit Ramachandramoorthy, Rajaprakash Vida, Ádám Tropper, Florian Pero, Renato Frey, Damian Maeder, Xavier Michler, Johann Ispánovity, Péter Dusán Kermouche, Guillaume Materials Science An equimolar NiCoFeCrGa high entropy alloy having dual-phase homogeneous components was studied, where the constituent phases exhibit distinct mechanical properties. Micropillars with various diameters were created from two differently heat treated samples, then they were compressed at slow strain rates, that revealed the material's limited sensitivity to size. On the other hand, increased strain rate sensitivity at high deformation speeds was observed, that differs substantially depending on the phase composition of the specimen. Dislocations within the two phases were studied by high resolution transmission electron microscopy and high angular resolution electron backscatter diffraction. The performed chemical analysis confirmed that slow cooling during casting create Cr-rich precipitates, that have significant impact on the global strength of the material. |
| title | Micromechanics reveal strain rate dependent transition between dislocation mechanisms in a dual phase high entropy alloy |
| topic | Materials Science |
| url | https://arxiv.org/abs/2409.20368 |