The magnetic and structural properties of nanostructured (Fe75Al25) 100-xBx alloys prepared by mechanical alloying

Gharsallah, H.; Azabou, M.; Escoda, L.; Suñol, J.J.; Alfonso, I.; Llorca-Isern, Núria; Khitouni, Mohamed

doi:10.1016/j.jallcom.2017.09.229

Cited by 15 publications

(7 citation statements)

References 37 publications

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“…After 80 h of milling, the contamination from the milling tools (Fe, Ni and Cr) is lower than 2.0 at.%. These results are similar to those previously measured in Fe-rich alloys [20,22].…”

Section: Resultssupporting

confidence: 92%

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Structural, Thermal and Magnetic Analysis of Fe75Co10Nb6B9 and Fe65Co20Nb6B9 Nanostructured Alloys

et al. 2021

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Two nanocrystalline ferromagnetic alloys of the Fe-Co-Nb-B system have been produced by mechanical alloying (MA). Their microstructure, thermal behavior and magnetic response were checked by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and vibrating sample magnetometry (VSM). After 80 h of MA, the alloys were nanostructured (bcc-Fe(Co)-rich phase). As the Co content increases, the density of the dislocations decreases. Besides, a higher concentration of Co causes an increase in the activation energy of the crystallization process. The calculated energies, 267 and 332 kJ/mol, are associated to the crystalline growth of the bcc-Fe-rich phase. The Co content of the samples has no effect on the value of the saturation magnetization, whereas the coercivity is lower in the alloy containing less Co. Samples were compacted and heat-treated. Optimal annealing reduces the coercivity by a factor of two. Results were compared with the data of Fe-Nb-B and Fe-Ni-Nb-B alloys.

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“…After 80 h of milling, the contamination from the milling tools (Fe, Ni and Cr) is lower than 2.0 at.%. These results are similar to those previously measured in Fe-rich alloys [20,22].…”

Section: Resultssupporting

confidence: 92%

“…Furthermore, the density of dislocation, ρ, (of the bcc-Fe-rich main phase) can be estimated from the crystallite size, the microstrain and the Burgers vector, b, taking into account the following equation [20]:…”

Section: Resultsmentioning

confidence: 99%

Structural, Thermal and Magnetic Analysis of Fe75Co10Nb6B9 and Fe65Co20Nb6B9 Nanostructured Alloys

et al. 2021

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“…Likewise, compositional analysis was performed (80 h of milling) with EDS microanalysis. The measurements indicates that the contamination from the milling tools is lower than 1.5 ± 0.5 at.%; typical results coherent with those previously found [10,15]. Oxygen is also found, probably favored by the high surface area of the particles in contact with air after the milling process.…”

Section: Microstructure and Thermal Analysissupporting

confidence: 86%

“…Higher values are calculated in those samples milled (80 h) in the planetary mill. The results are close to the expected limit of the dislocation density (plastic deformation) in bcc Fe (10 16 m −2 ) [15]. It should be remarked than XRD methods sometimes can provide higher values of the dislocations density than transmission electron microscopy (TEM) analysis [16].…”

Section: Microstructure and Thermal Analysissupporting

confidence: 81%

Fe-X-B-Cu (X = Nb, NiZr) Alloys Produced by Mechanical Alloying: Influence of Milling Device

Carrillo¹,

Saurina²,

Escoda³

et al. 2021

Metals

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In this work, we analyze the influence of the milling device in the microstructural evolution of two Fe-X-B-Cu (X = Nb, NiZr) alloys produced by mechanical alloying (MA). The two milling devices are a planetary mil (P7) and a shaker mill (SPEX 8000). Microstructural analysis by X-ray diffraction detects the formation of a Fe rich solid solution. In the Fe-Nb-B-Cu alloy produced in the shaker mill also appears a Nb(B) minor phase, whereas in the Fe-NiZr-B-Cu alloy produced in the planetary mill, a minor disordered phase is formed. The comparative study regarding the energy transferred per unit of time in both devices determines that the shaker mill is more energetic. This fact explains that in the Fe-Nb-B-Cu alloy, Nb has not been introduced in the main Fe rich phase, whereas in the Fe-NiZr-B-Cu alloy milled in the shaker mill was formed the highly disordered phase. With regard to thermal analysis, the values of the apparent activation energies of the main crystallization process (above 200 kJ/mol) correspond to the crystalline growth of the nanocrystalline Fe rich phase.

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“…M. Krifa et al [16] have been successfully synthesised from the mixture of prealloyed powders of FeAl and elemental Cu by the high-energy mechanosynthesis process aiming the nanocrystalline ternary alloy (Fe 60 Al 40 ) 80 Cu 20 . H. Ibn Gharsallah et al [17] studied the combination of the microstructure evolution and magnetic behaviour in the Fe 75 Al 25 alloy doped with boron during the mechanical alloying.…”

Section: Introductionmentioning

confidence: 99%

Investigating on structural, microstructural and magnetic properties of nanocrystalline Fe60Al35Mg5 alloy synthesized by high energy ball milling

Hafs¹,

Hafs

Berdjane

et al. 2023

Preprint

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The mechanical alloying process has been used to synthesise the nanocrystalline Fe60Al35Mg5 ( wt % )powders in a high energy planetary ball-mill Retsch PM 400. The evolution structural, microstructural and magnetic properties of ball-milled powders at different milling times (t variation from 0 to 32 h) were investigated by X-ray diffraction using the MAUD program which is based on the Rietveld method and the vibrating sample magnetometer (VSM). The XRD results reveal the formation of a bcc-Fe (Al, Mg) solid solution after 8 h of milling possessing a lattice parameter of 0,2895nm after 32 h of milling. It is also observed a refinement of the grain size which reaches 18,75 nm, and an increase in the microstrain after 32 hours of milling. Magnetic measurements of the milled Fe60Al35Mg5 ( wt % ) powder mixture exhibit a soft ferromagnetic character where the magnetic parameters are found to be very sensitive to the milling time mainly due to the particle size refinement as well as the formation of the solid solutions.

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The magnetic and structural properties of nanostructured (Fe75Al25) 100-xBx alloys prepared by mechanical alloying

Abstract: The magnetic and structural properties of nanostructured (Fe75Al25) 100-xBx alloy prepared by mechanical alloying H. Ibn. Gharsallah (a) , M.Azabou (a) , J. J. Suñol (b) , I. López (c) , N. Llorca-Isern (c) , M. Khitouni * (a) ,

Cited by 15 publications

References 37 publications

Structural, Thermal and Magnetic Analysis of Fe75Co10Nb6B9 and Fe65Co20Nb6B9 Nanostructured Alloys

Structural, Thermal and Magnetic Analysis of Fe75Co10Nb6B9 and Fe65Co20Nb6B9 Nanostructured Alloys

Fe-X-B-Cu (X = Nb, NiZr) Alloys Produced by Mechanical Alloying: Influence of Milling Device

Investigating on structural, microstructural and magnetic properties of nanocrystalline Fe60Al35Mg5 alloy synthesized by high energy ball milling

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