Correlation between microstructure, magnetic properties and mechanical behavior of the Permimphy alloy after high-pressure torsion
This study investigates the correlation between coercivity ( H c ), 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...
Gespeichert in:
Veröffentlicht in: | Journal of materials science 2024-04, Vol.59 (14), p.5968-5980 |
---|---|
Hauptverfasser: | , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | This study investigates the correlation between coercivity (
H
c
), 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
H
c
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
|
---|---|
ISSN: | 0022-2461 1573-4803 |
DOI: | 10.1007/s10853-024-09490-y |