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<p>First-order reversal curve (FORC) analysis is known to provide a precise evaluation of the magnetic properties of different magnetic alloys, thereby encouraging their development for high-quality and practical applications. However, the magnetic behavior of FeCrCo alloy is yet to be investigated and realized comprehensively. Here, the effect of magnetic field annealing on microstructural, magnetic, and mechanical characteristics of Fe-25Cr-15Co-3Mo-0.3Ti alloy is studied using field-emission scanning electron microscopy, X-ray diffraction, vibrating sample magnetometry, and Vickers hardness measurement. The magnetic annealing processes are performed at various temperatures ranging from 600 to 640&#xa0;°C. The single-phase structure of the resulting alloy is formed following solid solution annealing and quenching in water. An optimum temperature of 625&#xa0;°C is found to be suitable for the growth of the <i>α</i><sub>1</sub> phase using the magnetic annealing process. Although hysteresis loops indicate a maximum coercivity value of 541 Oe, FORC analysis reveals a higher mean coercivity of individual <i>α</i><sub>1</sub> nanoparticles. Moreover, FORC diagrams evidence the presence of magnetostatic interactions, which increase with increasing the magnetic annealing temperature to 630&#xa0;°C and then decrease for higher annealing temperatures. Moreover, an aging time of 135&#xa0;min enhances the remanence and reduces the coercive field distribution of Fe-25Cr-15Co-3Mo-0.3Ti alloy. Depending on the magnetic annealing conditions, the mechanical hardness of the alloys varies from 460 to 500&#xa0;HV due to lattice misfit. The results reveal that the FORC analysis provides new insights into a spinodal decomposition process, thereby allowing for the future development of FeCrCo magnetic alloys.</p>

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Evaluation of magnetic field annealing effect on Fe-25Cr-15Co-3Mo-0.3Ti alloy by first-order reversal curve analysis

  • 期刊论文

  • 发表日期：

    2025年1月19日

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  • Ebrahim Paimozd,
  • Ali Ghasemi,
  • Mahmoud Afsar

摘要

First-order reversal curve (FORC) analysis is known to provide a precise evaluation of the magnetic properties of different magnetic alloys, thereby encouraging their development for high-quality and practical applications. However, the magnetic behavior of FeCrCo alloy is yet to be investigated and realized comprehensively. Here, the effect of magnetic field annealing on microstructural, magnetic, and mechanical characteristics of Fe-25Cr-15Co-3Mo-0.3Ti alloy is studied using field-emission scanning electron microscopy, X-ray diffraction, vibrating sample magnetometry, and Vickers hardness measurement. The magnetic annealing processes are performed at various temperatures ranging from 600 to 640 °C. The single-phase structure of the resulting alloy is formed following solid solution annealing and quenching in water. An optimum temperature of 625 °C is found to be suitable for the growth of the α1 phase using the magnetic annealing process. Although hysteresis loops indicate a maximum coercivity value of 541 Oe, FORC analysis reveals a higher mean coercivity of individual α1 nanoparticles. Moreover, FORC diagrams evidence the presence of magnetostatic interactions, which increase with increasing the magnetic annealing temperature to 630 °C and then decrease for higher annealing temperatures. Moreover, an aging time of 135 min enhances the remanence and reduces the coercive field distribution of Fe-25Cr-15Co-3Mo-0.3Ti alloy. Depending on the magnetic annealing conditions, the mechanical hardness of the alloys varies from 460 to 500 HV due to lattice misfit. The results reveal that the FORC analysis provides new insights into a spinodal decomposition process, thereby allowing for the future development of FeCrCo magnetic alloys.