Effects of grain size on coercivity of combined-reaction-processed FePd intermetallics
The evolution of the microstructure and the coercivity of cold-deformed ferromagnetic Fe-Pd intermetallics with equiatomic composition during isothermal annealing at 500 and 600 deg. C has been studied by X-ray diffraction, scanning and transmission electron microscopy and vibrating sample magnetometry. The deformation-processed alloys exhibit morphologically essentially equiaxed microstructures and up to about fivefold increased coercivity compared with conventionally processed bulk L1{sub 0}-ordered FePd. An inverse linear relationship between the coercivity and the average grain size has been established, which for grain sizes in the range of about 0.4-1.0 {mu}m has been attributed to a nucleation-type coercivity mechanism.
- OSTI ID:
- 20634699
- Journal Information:
- Acta Materialia, Journal Name: Acta Materialia Journal Issue: 10 Vol. 52; ISSN 1359-6454; ISSN ACMAFD
- Country of Publication:
- United States
- Language:
- English
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