Nanocrystalline structural evolution in Fe90Zr7B3 soft magnetic material

Zhang, Y.; Hono, K.; Inoue, Akihisa; Makino, Akihiro; Sakurai, T.

doi:10.1016/1359-6454(95)00277-4

Cited by 92 publications

(17 citation statements)

References 22 publications

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“…16,17) The mixing heat of Zr-Ag, Al-Ag, Ni-Ag and Cu-Ag atomic pairs is À20, À4, +15 and +2 kJ/mol respectively. 18) Therefore, there exist (Zr,Ag)-rich domains of short-range orders in glass which act as nuclei of the I-phase during the crystallization of Zr-Al-Ni-Cu-Ni glasses.…”

Section: Resultsmentioning

confidence: 99%

Microstructure of Zr-Al-Cu-Ni-Ag Ingot and the Thermal Stability of Corresponding Glass

Yan

et al. 2003

Mater. Trans.

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Zr 65 Al 7:5 Ni 10 Cu 12:5 Ag 5 ingots with different microstructures are obtained by changing the number of the repeated arc melting times. Differential scanning calorimetry (DSC) traces show that when the microstructure of the mother ingot becomes finer, the thermal stability of the glassy alloy improves during the crystallization of the glass. Because of the structure heredity, the finer the mother ingot microstructure is, the smaller the average size of the (Zr,Ag)-rich short-range orders in the glassy alloy is. The decrease of the size of the short-range orders makes the rearrangement of the elements more difficult in the glassy alloy. As a result, the activation energy for precipitation and decomposition of the Iphase becomes higher.

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Section: Resultsmentioning

confidence: 99%

Microstructure of Zr-Al-Cu-Ni-Ag Ingot and the Thermal Stability of Corresponding Glass

Yan

et al. 2003

Mater. Trans.

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“…Aside from the Al-based amorphous alloys, Fe-based systems and their crystallization behavior have also been investigated in detail. Solute accumulation at the interface between bcc-Fe nanocrystals and the amorphous matrix was observed by APFIM for an amorphous Fe 90 Zr 7 B 3 alloy after annealing at 723K for 60min (Zhang et al, 1996). In this case Zr atoms piled-up at the interfaces.…”

Section: Growth Of Crystallites In Metallic Glassesmentioning

confidence: 86%

Nanocrystals in Metallic Glasses

Hebert¹

2011

Nanocrystal

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“…The heterogeneous sites originate from the short-range orders in the glassy phase, as the so-called quenched-in nuclei, which provide the nucleation sites for the precipitation of the primary phase during the crystallization process. 15,16) And even, when the active size of the quenched-in nuclei is larger than the critical cluster radius at a given annealing temperature, these nuclei then simply grow with time. Under this condition, the alloy is spontaneously with the nuclei at a density corresponding to the density of the quenched-in nuclei.…”

Section: Resultsmentioning

confidence: 99%

“…Zr 60 Al 15 Ni 25 has been discovered as the first Zr-based bulk glass former with a wide supercooled liquid region ÁT x (defined as the temperature region between glass transition temperature T g and crystallization temperature T x ) as high as 77 K. 4) Li et al has investigated the phase products during the crystallization of Zr 60 Al 15 Ni 25 glassy alloy by analytical transmission electron microscopy (ATEM) and X-ray diffraction (XRD). 9) However, little work has been done on the crystallization kinetics of this bulk glassy alloy.…”

Section: Introductionmentioning

confidence: 99%

Study of the Crystallization Kinetics of Zr60Al15Ni25 Bulk Glassy alloy by Differential Scanning Calorimetry

Yan

et al. 2003

Mater. Trans.

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This paper investigates the crystallization kinetics of Zr 60 Al 15 Ni 25 bulk glassy alloy under isothermal annealing by differential scanning calorimetry (DSC). The results show that the incubation time is very small even at low annealing temperature (743 K) and increases slightly with the annealing temperature decreasing, which suggests a growth-controlled crystallization process. However, the exothermic peak width, reflecting the time for the actual crystallization process, increases greatly when annealing temperature decreases. The Avrami exponents indicate that the crystallization mechanism changes at different annealing temperatures. The change of the crystallization mechanism is attributed to the great difference of the mobility ability of atoms at different temperatures.

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Nanocrystalline structural evolution in Fe90Zr7B3 soft magnetic material

Cited by 92 publications

References 22 publications

Microstructure of Zr-Al-Cu-Ni-Ag Ingot and the Thermal Stability of Corresponding Glass

Microstructure of Zr-Al-Cu-Ni-Ag Ingot and the Thermal Stability of Corresponding Glass

Nanocrystals in Metallic Glasses

Study of the Crystallization Kinetics of Zr<SUB>60</SUB>Al<SUB>15</SUB>Ni<SUB>25</SUB> Bulk Glassy alloy by Differential Scanning Calorimetry

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