Cooling rate as a tool of tailoring structure of Fe-(9–33%)Ga alloys

Golovin, I.S.; Балагуров, А.М.; Бобриков, И.А.; Sumnikov, S.V.; Mohamed, A.K.

doi:10.1016/j.intermet.2019.106610

Cited by 47 publications

(15 citation statements)

References 19 publications

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“…Dependencies obtained for the phase A2 λ 001 (x) reproduce behavior a 0 (x) (see Fig 1, a, 4, c). Similar relationship was obtained during the study of the structure of alloys Fe 100−x Ga x (15 ≤ x ≤ 30 at.%) by means of diffraction of neutrons in the work [14]. Authors established that behavior of concentration dependence of equilibrium parameters of the lattice of A2 and D0 3 phases is similar to that of the magnetostriction constant.…”

Section: Resultssupporting

confidence: 72%

Magnetostriction of the Fe-=SUB=-75-=/SUB=-Ga-=SUB=-25-x-=/SUB=-Z-=SUB=-x-=/SUB=- (Z=Al, Ge, Si) alloys: calculation by the magnetic torque method

Matyunina

Загребин

Sokolovskiy

et al. 2022

Physics of the Solid State

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This work presents an ab initio study of the effect of a small addition of the third element of III and IV groups on the elastic and magnetoelastic properties of Fe75Ga25 alloy. The dependencies of the tetragonal elastic modulus C', magnetoelastic constant -b1, and the tetragonal magnetostrictive constant λ001 on the concentration of the Z-element in the cubic crystal structures A2 and D03 were obtained with the help of the density functional theory and the magnetic torque method in Fe75Ga25-xZx (Z=Al, Ge, Si) alloys (0≤ x≤6 at.%). It is shown that the addition of Al and Si atoms leads to an increase in the tetragonal elastic modulus compared to the Fe75Ga25 binary alloy. A correlation was established in the dependence equilibrium lattice constants a0(x) and λ001(x) in the studied ternary alloys for the A2 structure. Keywords: tetragonal magnetostriction constant, magnetoelastic constant, tetragonal shear modulus, magnetic torque method.

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Section: Resultssupporting

confidence: 72%

Magnetostriction of the Fe-=SUB=-75-=/SUB=-Ga-=SUB=-25-x-=/SUB=-Z-=SUB=-x-=/SUB=- (Z=Al, Ge, Si) alloys: calculation by the magnetic torque method

Matyunina

Загребин

Sokolovskiy

et al. 2022

Physics of the Solid State

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“…Fe-Ga alloys have attracted attention due to their giant magnetostriction in low magnetic fields [23][24][25] and a number of first-and second-order phase transitions below ~1000 K [26,27]. The Fe-Ga alloys reveal distinct ordering and the type of order depends on temperature and concentration of Ga atoms [25,28]. To the best of our knowledge, no tracer diffusion data have been reported for the Fe-Ga alloys so far, and the diffusion properties of the Fe-Ga alloys are essentially unknown in spite of their key role for diffusion-controlled phase transitions.…”

Section: Introductionmentioning

confidence: 99%

Composition dependence of tracer diffusion coefficients in Fe–Ga alloys: A case study by a tracer-diffusion couple method

et al. 2021

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“…The melting was carried out in an induction vacuum furnace, the working space of which was evacuated, then it was filled with argon with a purity of 99.9995% to a pressure of 0.5 atm. After melting, the metal was aged 0.5 min, then gravity casting of the melt into a copper mold with an internal size of 60 × 16 × 4 mm was carried out, which provided cooling at a high speed [9]. Samples in the form of parallelepipeds with dimensions of 4 × 8 × 50 mm were cut out of the ingots.…”

Section: Samples Experiments and Data Processingmentioning

confidence: 99%

Structures and phase transitions in Fe-Ga-Al alloys

Балагуров

Бобриков

Sumnikov

et al. 2022

Physics of the Solid State

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Evolution of structural phases and microstructural cast state of Fe100-(x+y)GaxAly compositions in the range of 17≤(x+y)≤39 at.% was studied in neutron diffraction experiments performed with high resolution and in continuous temperature scanning mode when heated to ~ 900oC and subsequent cooling. It is established that the structures of the cast states of triple alloys in the studied range of Ga and Al content basically repeat the structure of the double compositions Fe100-xGax up to x~ 30 and Fe100-yAly up to y~ 50. Namely, only cubic phases (A2, D03 and B2) are observed in them, and hexagonal (A3, D019) and monoclinic (such as Fe13Ga9 or α-Fe6Ga5) there are no phases characteristic of the Fe-Ga system. The expansion of the range of formation of cubic phases formed on the basis of the BCC cell in ternary alloys in comparison with Fe100-xGax indicates the role of Al in the stabilization of these structures. Keywords: alloys Fe-Ga, Fe-Al, Fe-Ga-Al, structural phase transitions, neutron diffraction, magnetostriction.

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Cooling rate as a tool of tailoring structure of Fe-(9–33%)Ga alloys

Cited by 47 publications

References 19 publications

Magnetostriction of the Fe-=SUB=-75-=/SUB=-Ga-=SUB=-25-x-=/SUB=-Z-=SUB=-x-=/SUB=- (Z=Al, Ge, Si) alloys: calculation by the magnetic torque method

Magnetostriction of the Fe-=SUB=-75-=/SUB=-Ga-=SUB=-25-x-=/SUB=-Z-=SUB=-x-=/SUB=- (Z=Al, Ge, Si) alloys: calculation by the magnetic torque method

Composition dependence of tracer diffusion coefficients in Fe–Ga alloys: A case study by a tracer-diffusion couple method

Structures and phase transitions in Fe-Ga-Al alloys

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