The Initial Stage of Nanocrystallization in Fe-Cu-Nb-Si-B Ferromagnetic Alloys

Jalnin, B.V.; Kaloshkin, S.D.; Kaevitser, E. V.; Tcherdyntsev, Victor V.; Obrucheva, E.V.

doi:10.1007/1-4020-2965-9_5

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Ohkubo et al [54] gave evidence that fcc-Cu clusters are serving as heterogeneous nucleation sites for bcc-Fe in amorphous Fe 89 Zr 7 B 3 Cu 1 alloy. As in our case, the enthalpy of mixing between Cu and M (Hf, Gd) has much higher negative value [55][56][57] than in the alloys from the Finemet group [58,59], it is more likely that during solidification, Cu atoms are involved in the formation of certain intermetallic compound rather than fcc-Cu clusters. It is thus presumed that GdCu clusters with simple cubic structure [60] are formed and are involved in the bcc-Fe dendrite formation in the alloys investigated in the current study.…”

Section: Resultsmentioning

confidence: 98%

Mechanical properties and structure of rapidly solidified bulk Fe89−xHf4Ta1Cu1Gd1SixB4 (x=0–15) and Fe74Hf4Ta1Cu1Gd1LaySi15−yB4 (y=7) alloys

Bardziński

Błyskun

2016

Materials & Design

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Section: Resultsmentioning

confidence: 98%

Mechanical properties and structure of rapidly solidified bulk Fe89−xHf4Ta1Cu1Gd1SixB4 (x=0–15) and Fe74Hf4Ta1Cu1Gd1LaySi15−yB4 (y=7) alloys

Bardziński

Błyskun

2016

Materials & Design

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Structural evolution and the kinetics of Cu clustering in the amorphous phase of Fe-Cu-Nb-Si-B alloy

Gupta

Shukla

et al. 2011

Journal of Applied Physics

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An attempt has been made to investigate the evolution of the structure of the amorphous phase of Fe-73.9 Cu-0.9 Nb-3.1 Si-13.2 B-8.9 (finemet) alloy by a combination of wide-angle x-ray scattering, small angle x-ray scattering (SAXS), Mossbauer spectroscopy and X-ray absorption near edge spectroscopy on the supposition that they would provide complementary information. Before the onset of nanocrystallization, the amorphous phase undergoes a structural relaxation resulting in small increase in the hyperfine field and a decrease in the width of the first diffraction maxima. There is an increase in the topological ordering in the system, though chemical inhomogeneity sets-in due to the clustering of Cu atoms in the pure amorphous state of this alloy. Annealing at 400 degrees C (well below the crystallization temperature) for different time durations results in occurrence of Cu clusters having fcc structure. Kinetics of Cu clustering is studied using SAXS. The incubation time for the clustering at 400 degrees C is similar to 120 min. With further annealing, the average cluster size gradually increases from the initial value of similar to 0.4 nm, reaching a value of similar to 0.6 nm after annealing for 720 min. Cluster size exhibits a t(1/2) dependence, suggesting a diffusion controlled growt

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The Initial Stage of Nanocrystallization in Fe-Cu-Nb-Si-B Ferromagnetic Alloys

Cited by 2 publications

References 4 publications

Mechanical properties and structure of rapidly solidified bulk Fe89−xHf4Ta1Cu1Gd1SixB4 (x=0–15) and Fe74Hf4Ta1Cu1Gd1LaySi15−yB4 (y=7) alloys

Mechanical properties and structure of rapidly solidified bulk Fe89−xHf4Ta1Cu1Gd1SixB4 (x=0–15) and Fe74Hf4Ta1Cu1Gd1LaySi15−yB4 (y=7) alloys

Structural evolution and the kinetics of Cu clustering in the amorphous phase of Fe-Cu-Nb-Si-B alloy

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