Correlation between microstructure, magnetic properties and mechanical behavior of the Permimphy alloy after high-pressure torsion
Authors: Dabou, O., Baudin, T., Brisset, F., Waeckerlé, T., Ateba Betanda, Y., Huang, Y., Helbert, A.L., Bradai, D. and Langdon, T.G.
Journal: Journal of Materials Science
eISSN: 1573-4803
ISSN: 0022-2461
DOI: 10.1007/s10853-024-09490-y
Abstract:This study investigates the correlation between coercivity (Hc), grain size (d), and dislocation density in the Permimphy alloy (Fe–80%Ni–6%Mo). The samples used in this study were subjected to varying levels of applied strain through processing by high-pressure torsion. The microstructure and the magnetic coercivity were analyzed using a scanning electron microscope, electron backscatter diffraction and vibrating sample magnetometry. The grain size of the samples varied from 30 to 190 nm. This study demonstrated a strong correlation between Hc and microhardness when d > 3 µm. The results show that the coercivity of the Permimphy alloy follows an inverse V-shape with respect to grain size. The coercivity of the samples decreased despite increasing the dislocation density and the hardness when d < 3 µm. This phenomenon is attributed to the ferromagnetic exchange interaction across multiple grains and leads to the alignment of magnetic moments.
https://eprints.bournemouth.ac.uk/39497/
Source: Scopus
Correlation between microstructure, magnetic properties and mechanical behavior of the Permimphy alloy after high-pressure torsion
Authors: Dabou, O., Baudin, T., Brisset, F., Waeckerle, T., Ateba Betanda, Y., Huang, Y., Helbert, A.-L., Bradai, D. and Langdon, T.G.
Journal: JOURNAL OF MATERIALS SCIENCE
eISSN: 1573-4803
ISSN: 0022-2461
DOI: 10.1007/s10853-024-09490-y
https://eprints.bournemouth.ac.uk/39497/
Source: Web of Science (Lite)
Correlation between microstructure, magnetic properties and mechanical behavior of the Permimphy alloy after high-pressure torsion
Authors: Dabou, O., Baudin, T., Brisset, F., Waeckerlé, T., Betanda, Y.A., Huang, Y., Helbert, A.-L., Bradai, D. and Langdon, T.G.
Journal: Journal of Materials Science
Volume: 59
Issue: 14
Pages: 5968-5980
Publisher: Springer Link
ISSN: 0022-2461
DOI: 10.1007/s10853-024-09490-y
Abstract:This study investigates the correlation between coercivity (Hc), grain size (d), and dislocation density in the Permimphy alloy (Fe-80%Ni-6%Mo). The samples used in this study were subjected to varying levels of applied strain through processing by high-pressure torsion (HPT). The microstructure and the magnetic coercivity were analyzed using a scanning electron microscope (SEM), Electron Backscatter Diffraction (EBSD) and Vibrating Sample Magnetometry (VSM). The grain size of the samples varied from 30 μm to 190 nm. This study demonstrated a strong correlation between Hc and microhardness when d > 3 μm. The results show that the coercivity of the Permimphy alloy follows an inverse V-shape with respect to grain size. The coercivity of the samples decreased despite increasing the dislocation density and the hardness when d < 3 μm. This phenomenon is attributed to the ferromagnetic exchange interaction across multiple grains and leads to the alignment of magnetic moments.
https://eprints.bournemouth.ac.uk/39497/
Source: Manual
Preferred by: Yi Huang
Correlation between microstructure, magnetic properties and mechanical behavior of the Permimphy alloy after high-pressure torsion
Authors: Dabou, O., Baudin, T., Brisset, F., Waeckerlé, T., Betanda, Y.A., Huang, Y., Helbert, A.-L., Bradai, D. and Langdon, T.G.
Journal: Journal of Materials Science
Publisher: Chapman & Hall
ISSN: 0022-2461
Abstract:This study investigates the correlation between coercivity (Hc), grain size (d), and dislocation density in the Permimphy alloy (Fe-80%Ni-6%Mo). The samples used in this study were subjected to varying levels of applied strain through processing by high-pressure torsion (HPT). The microstructure and the magnetic coercivity were analyzed using a scanning electron microscope (SEM), Electron Backscatter Diffraction (EBSD) and Vibrating Sample Magnetometry (VSM). The grain size of the samples varied from 30 μm to 190 nm. This study demonstrated a strong correlation between Hc and microhardness when d > 3 μm. The results show that the coercivity of the Permimphy alloy follows an inverse V-shape with respect to grain size. The coercivity of the samples decreased despite increasing the dislocation density and the hardness when d < 3 μm. This phenomenon is attributed to the ferromagnetic exchange interaction across multiple grains and leads to the alignment of magnetic moments.
https://eprints.bournemouth.ac.uk/39497/
Source: BURO EPrints