Evolution of magnetic response as a function of annealing temperature in Fe-based alloys

The magnetic response, coercive force and magnetic induction, in Fe-10at.% Si, Fe-6at.% Al-9at.% Si and Fe-4at.% Al-8at.% Ge alloys as a function of the annealing temperature was determined and correlated to the microstructural state. The microstructural characterization was made through differential thermal analysis, mechanical spectroscopy and neutron thermodiffraction studies. It has been determined that the increase in the order degree and the decrease in the mobility of structural defects lead to a deterioration of the magnetic quality of the alloys above detailed.

Keywords
Fe-based alloys; microstructure; Improvement of magnetic properties; Hysteresis loops

Authorship

Damián Gargicevich Damián Gargicevich

CONICET-UNR, Laboratorio de Materiales, Escuela de Ingeniería Eléctrica, Centro de Tecnología e Investigación Eléctrica, Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Av. Pellegrini 250, 2000, Rosario, Santa Fe, Argentina. e-mail: gargi@fceia.unr.edu.ar; bonifaci@fceia.unr.edu.ar; olambri@fceia.unr.edu.ar; pjchiappero@gmail.com; jacano@fceia.unr.edu.ar; gizelada@fceia.unr.edu.ar;UNRArgentinaRosario, Santa Fe, ArgentinaCONICET-UNR, Laboratorio de Materiales, Escuela de Ingeniería Eléctrica, Centro de Tecnología e Investigación Eléctrica, Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Av. Pellegrini 250, 2000, Rosario, Santa Fe, Argentina. e-mail: gargi@fceia.unr.edu.ar; bonifaci@fceia.unr.edu.ar; olambri@fceia.unr.edu.ar; pjchiappero@gmail.com; jacano@fceia.unr.edu.ar; gizelada@fceia.unr.edu.ar;

Federico Guillermo Bonifacich

Osvaldo Agustín Lambri

Pablo Chiappero

José Ángel Cano

Griselda Irene Zelada

José Ignacio Pérez-Landazábal

Departamento de Física, Universidad Pública de Navarra, Pamplona, España.Universidad Pública de NavarraEspañaPamplona, Navarra, EspañaDepartamento de Física, Universidad Pública de Navarra, Pamplona, España.

Instituto de Materiales Avanzados (INAMAT), Universidad Pública de Navarra, Campus de Arrosadía s/n, 31006 Pamplona, Navarra, España. e-mail: ipzlanda@unavarra.es; recarte@unavarra.esUniversidad Pública de NavarraEspañaPamplona, Navarra, EspañaInstituto de Materiales Avanzados (INAMAT), Universidad Pública de Navarra, Campus de Arrosadía s/n, 31006 Pamplona, Navarra, España. e-mail: ipzlanda@unavarra.es; recarte@unavarra.es

Vicente Recarte

Víctor Martín Galván Josa

CONICET-UNC, Facultad de Matemática, Astronomía y Física, Universidad Nacional de Córdoba, Medina Allende, Ciudad Universitaria, 5000, Córdoba, Córdoba, Argentina. e-mail: galvan@famaf.unc.edu.arUNCArgentinaCórdoba, Córdoba, ArgentinaCONICET-UNC, Facultad de Matemática, Astronomía y Física, Universidad Nacional de Córdoba, Medina Allende, Ciudad Universitaria, 5000, Córdoba, Córdoba, Argentina. e-mail: galvan@famaf.unc.edu.ar

Universidad Nacional de Córdoba, Universidad Nacional de Córdoba, Facultad de Matemática, Astronomía y Física, Córdoba, Córdoba, ArgentinaUniversidad Nacional de CórdobaArgentinaCórdoba, Córdoba, ArgentinaUniversidad Nacional de Córdoba, Universidad Nacional de Córdoba, Facultad de Matemática, Astronomía y Física, Córdoba, Córdoba, Argentina

María Cecilia Blanco

CONICET-UNC, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Av. Haya de la Torre, Ciudad Universitaria, 5000, Córdoba, Córdoba, Argentina. e-mail: ceciliablanco3@gmail.comUNCArgentinaCórdoba, Córdoba, ArgentinaCONICET-UNC, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Av. Haya de la Torre, Ciudad Universitaria, 5000, Córdoba, Córdoba, Argentina. e-mail: ceciliablanco3@gmail.com

Universidad Nacional de Córdoba, Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Córdoba, Córdoba, ArgentinaUniversidad Nacional de CórdobaArgentinaCórdoba, Córdoba, ArgentinaUniversidad Nacional de Córdoba, Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Córdoba, Córdoba, Argentina

Gabriel Julio Cuello

Instituto Laue-Langevin, 71, Av. des Martyrs, 38042, Grenoble, Isère, France. e-mail: cuello@ill.euInstituto Laue-LangevinFranceGrenoble, Isère, FranceInstituto Laue-Langevin, 71, Av. des Martyrs, 38042, Grenoble, Isère, France. e-mail: cuello@ill.eu

Damián Gargicevich

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (10)

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Figure 1
DTA thermograms for Fe-10at% Si (blue circles), Fe-6at.% Al-9at.% Si (red squares), Fe-4at.% Al-8at.% Ge (green triangles). Not all measured points are shown for clarity.

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Figure 2
Neutron diffraction patterns for three different temperatures for Fe-10at.% Si.

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Figure 3
Neutron diffraction patterns for Fe-6at.% Al-9at.% Si at different temperatures.

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Figure 4
Neutron thermodiffraction pattern for Fe-4at.% Al-8at.% Ge.

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Figure 5
Damping (Q^-1), full symbols, and normalized shear modulus (G(T)/G(RT)), empty symbols, as a function of temperature for Fe-10at.% Si alloy. Blue circles, as-quenched sample; red squares, after heating to 973 K; green triangles, after two heating to 973 K; black diamonds, after heating to 1050 K; orange inverted triangles, after a heating to 1273 K. Only some measured points where plotted for clarity.

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Figure 6
Damping (Q^-1), full symbols, and normalized shear modulus (G(T)/G(RT)), empty symbols, as a function of temperature. Blue triangles, heating first thermal cycle; inverted light blue triangles, cooling first thermal cycle; red circles, heating second thermal cycle; orange squares, cooling second thermal cycle. Inset shows a zoom of low temperature spectra.

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Figure 7
Damping (Q^-1), full symbols, and normalized shear modulus (G(T)/G(RT)), empty symbols, as a function of temperature for Fe-4at.% Al-8at.% Ge. Blue circles, heating first thermal cycle; red diamonds, heating second thermal cicle. Only half points are shown for clarity.

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Figure 8
Bm and Hc as a function of annealing temperature for Fe-10at.% Si. Magnetic loops were traced at RT. Inset shows a hysteresis loop.

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Figure 9
Bm and Hc as a function of annealing temperature for Fe-6at.% Al-9at.% Si. Being magnetic loops traced at room temperature. Inset shows a hysteresis loop.

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Figure 10
Bm and Hc as a function of annealing temperature for Fe-4at.% Al-8at.% Ge. Being magnetic loops traced at room temperature. Inset shows a hysteresis loop.

Figure 1 DTA thermograms for Fe-10at% Si (blue circles), Fe-6at.% Al-9at.% Si (red squares), Fe-4at.% Al-8at.% Ge (green triangles). Not all measured points are shown for clarity.

Figure 2 Neutron diffraction patterns for three different temperatures for Fe-10at.% Si.

Figure 3 Neutron diffraction patterns for Fe-6at.% Al-9at.% Si at different temperatures.

Figure 4 Neutron thermodiffraction pattern for Fe-4at.% Al-8at.% Ge.

Figure 5 Damping (Q^-1), full symbols, and normalized shear modulus (G(T)/G(RT)), empty symbols, as a function of temperature for Fe-10at.% Si alloy. Blue circles, as-quenched sample; red squares, after heating to 973 K; green triangles, after two heating to 973 K; black diamonds, after heating to 1050 K; orange inverted triangles, after a heating to 1273 K. Only some measured points where plotted for clarity.

Figure 6 Damping (Q^-1), full symbols, and normalized shear modulus (G(T)/G(RT)), empty symbols, as a function of temperature. Blue triangles, heating first thermal cycle; inverted light blue triangles, cooling first thermal cycle; red circles, heating second thermal cycle; orange squares, cooling second thermal cycle. Inset shows a zoom of low temperature spectra.

Figure 7 Damping (Q^-1), full symbols, and normalized shear modulus (G(T)/G(RT)), empty symbols, as a function of temperature for Fe-4at.% Al-8at.% Ge. Blue circles, heating first thermal cycle; red diamonds, heating second thermal cicle. Only half points are shown for clarity.

Figure 8 Bm and Hc as a function of annealing temperature for Fe-10at.% Si. Magnetic loops were traced at RT. Inset shows a hysteresis loop.

Figure 9 Bm and Hc as a function of annealing temperature for Fe-6at.% Al-9at.% Si. Being magnetic loops traced at room temperature. Inset shows a hysteresis loop.

Figure 10 Bm and Hc as a function of annealing temperature for Fe-4at.% Al-8at.% Ge. Being magnetic loops traced at room temperature. Inset shows a hysteresis loop.

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Evolution of magnetic response as a function of annealing temperature in Fe-based alloys

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[1] Damián Gargicevich