Meiser, Jerome ; Alhafez, Iyad Alabd ; Beck, Tilmann ; Smaga, Marek ; Müller, Ralf ; Urbassek, Herbert M. (2019)
Nanoindentation into a metastable austenite triggers the martensitic phase transformation : An atomistic study.
In: AIP Advances, 9 (1)
doi: 10.1063/1.5081496
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Indentation into a metastable austenite may induce the phase transformation to the bcc phase. We study this process using atomistic simulation. At temperatures low compared to the equilibrium transformation temperature, the indentation triggers the transformation of the entire crystallite: after starting the transformation, it rapidly proceeds throughout the simulation crystallite. The microstructure of the transformed sample is characterized by twinned grains. At higher temperatures, around the equilibrium transformation temperature, the crystal transforms only locally, in the vicinity of the indent pit. In addition, the indenter produces dislocation plasticity in the remaining austenite. At intermediate temperatures, the crystal continuously transforms throughout the indentation process.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Meiser, Jerome ; Alhafez, Iyad Alabd ; Beck, Tilmann ; Smaga, Marek ; Müller, Ralf ; Urbassek, Herbert M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Nanoindentation into a metastable austenite triggers the martensitic phase transformation : An atomistic study |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2019 |
| Verlag: | American Institute of Physics |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | AIP Advances |
| Jahrgang/Volume einer Zeitschrift: | 9 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1063/1.5081496 |
| URL / URN: | https://aip.scitation.org/doi/full/10.1063/1.5081496 |
| Kurzbeschreibung (Abstract): | Indentation into a metastable austenite may induce the phase transformation to the bcc phase. We study this process using atomistic simulation. At temperatures low compared to the equilibrium transformation temperature, the indentation triggers the transformation of the entire crystallite: after starting the transformation, it rapidly proceeds throughout the simulation crystallite. The microstructure of the transformed sample is characterized by twinned grains. At higher temperatures, around the equilibrium transformation temperature, the crystal transforms only locally, in the vicinity of the indent pit. In addition, the indenter produces dislocation plasticity in the remaining austenite. At intermediate temperatures, the crystal continuously transforms throughout the indentation process. |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik > Fachgebiet Kontinuumsmechanik |
| Hinterlegungsdatum: | 04 Mai 2022 07:53 |
| Letzte Änderung: | 04 Mai 2022 07:53 |
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