Schmidt, Simon ; Dornisch, Wolfgang ; Müller, Ralf (2019)
Martensitic transformation at a crack under mode I and II loading.
In: PAMM, 19 (1)
doi: 10.1002/pamm.201900465
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Metastable austenitic steels can undergo phase transformation. As an allotrope two crystal configurations are of interest: the softer austenitic parent phase and the martensitic phases. Here, the bain orientation relationship leads to distinct orientations for the martensitic variants with a different transformation strain 7. A phase field approach is used to model the transformation, where a multi-valued order parameter identifies the austenitic parent phase and the martensitic variants. This allows to define bulk and surface energies as regularized functions in terms of the order parameter and its gradient. The kinetics of the martensitic transformation are temperature dependent. Temperatures below an equilibrium temperature favour the growth of the martensitic phase, whereas temperatures above the equilibrium favour the austenitic phase. Approaching the equilibrium temperature slows down the transformation 5. In this work we consider a static crack under mode I and mode II loading.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Schmidt, Simon ; Dornisch, Wolfgang ; Müller, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Martensitic transformation at a crack under mode I and II loading |
| Sprache: | Englisch |
| Publikationsjahr: | 18 November 2019 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | PAMM |
| Jahrgang/Volume einer Zeitschrift: | 19 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1002/pamm.201900465 |
| URL / URN: | https://onlinelibrary.wiley.com/doi/abs/10.1002/pamm.2019004... |
| Kurzbeschreibung (Abstract): | Metastable austenitic steels can undergo phase transformation. As an allotrope two crystal configurations are of interest: the softer austenitic parent phase and the martensitic phases. Here, the bain orientation relationship leads to distinct orientations for the martensitic variants with a different transformation strain 7. A phase field approach is used to model the transformation, where a multi-valued order parameter identifies the austenitic parent phase and the martensitic variants. This allows to define bulk and surface energies as regularized functions in terms of the order parameter and its gradient. The kinetics of the martensitic transformation are temperature dependent. Temperatures below an equilibrium temperature favour the growth of the martensitic phase, whereas temperatures above the equilibrium favour the austenitic phase. Approaching the equilibrium temperature slows down the transformation 5. In this work we consider a static crack under mode I and mode II loading. |
| 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 07:44 |
| Letzte Änderung: | 04 Mai 2022 07:44 |
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