Ohmer, Dominik ; Yi, Min ; Gutfleisch, Oliver ; Xu, Bai-Xiang (2023)
Phase-field modelling of paramagnetic austenite–ferromagnetic martensite transformation coupled with mechanics and micromagnetics.
In: International Journal of Solids and Structures, 2022, 238
doi: 10.26083/tuprints-00021033
Article, Secondary publication, Postprint
![]() |
Text
Phase-field_modeling_of_paramagnetic_austenite-ferromagnetic_martensite_transformation_Ohmer_IJSS.pdf The full-text document for this entry is not yet available due to a hold period. Until 16 December 2023 access is limited to Repository staff only. Copyright Information: CC BY-NC-ND 4.0 International - Creative Commons, Attribution NonCommercial, NoDerivs. Download (8MB) |
Item Type: | Article |
---|---|
Type of entry: | Secondary publication |
Title: | Phase-field modelling of paramagnetic austenite–ferromagnetic martensite transformation coupled with mechanics and micromagnetics |
Language: | English |
Date: | 2023 |
Place of Publication: | Darmstadt |
Year of primary publication: | 2022 |
Publisher: | Elsevier |
Journal or Publication Title: | International Journal of Solids and Structures |
Volume of the journal: | 238 |
Collation: | 36 Seiten |
DOI: | 10.26083/tuprints-00021033 |
Corresponding Links: | |
Origin: | Secondary publication |
Abstract: | A three-dimensional phase-field model is proposed for simulating the magnetic martensitic phase transformation. The model considers a paramagnetic cubic austenite to ferromagnetic tetragonal martensite transition, as it occurs in magnetic Heusler alloys like Ni2 MnGa, and is based on a Landau 2-3-4 polynomial with temperature dependent coefficients. The paramagnetic–ferromagnetic transition is recaptured by interpolating the micromagnetic energy as a function of the order parameter for the ferroelastic domains. The model is numerically implemented in real space by finite element (FE) method. FE simulations in the martensitic state show that the model is capable to correctly recapture the ferroelastic and -magnetic microstructures, as well as the influence of external stimuli. Simulation results indicate that the paramagnetic austenite to ferromagnetic martensite transition shifts towards higher temperatures when a magnetic field or compressive stress is applied. The dependence of the phase transition temperature shift on the strength of the external stimulus is uncovered as well. Simulation of the phase transition in magnetocaloric materials is of high interest for the development of energy-efficient magnetocaloric cooling devices. |
Uncontrolled Keywords: | phase-field model, micromagnetics, first-order phase transition |
Status: | Postprint |
URN: | urn:nbn:de:tuda-tuprints-210333 |
Classification DDC: | 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften 500 Naturwissenschaften und Mathematik > 530 Physik 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
Divisions: | 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Functional Materials 11 Department of Materials and Earth Sciences > Material Science > Mechanics of functional Materials |
Date Deposited: | 04 Aug 2022 11:34 |
Last Modified: | 04 Aug 2022 11:34 |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/21033 |
PPN: | |
Export: |
![]() |
View Item |