Thermal stability and magnetic properties of FeCoBSiNb bulk metallic glasses

Stoica, M.; Li, Ran; Yavari, A.R.; Vaughan, Gavin; Eckert, J.; Steenberge, N. Van; Romera, Daniel Ruiz

doi:10.1016/j.jallcom.2010.04.013

Cited by 52 publications

(28 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…All values (see Table 1) are very close to those measured for other known BMGs [19,35] and are in good agreement with the maximum achievable diameter for which the samples are still amorphous: 3 mm for alloy A [36], 2 mm for alloy B (present work), 5 mm for alloy C [37] and 2.5 mm for alloy D [18]. Compared to other alloys, alloy C encounters a relatively lesser drop in viscosity magnitude in supercooled liquid region, which indicates the existence of a stronger relationship between better GFA and dynamic behavior of supercooled liquids.…”

Section: Discussionsupporting

confidence: 85%

Viscosity and fragility of the supercooled liquids and melts from the Fe–Co–B–Si–Nb and Fe–Mo–P–C–B–Si glass-forming alloy systems

et al. 2015

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 85%

Viscosity and fragility of the supercooled liquids and melts from the Fe–Co–B–Si–Nb and Fe–Mo–P–C–B–Si glass-forming alloy systems

et al. 2015

View full text Add to dashboard Cite

“…Using these data and the Kissinger method, activation energies of the crystallization were determined (Fig. 6) [21,22]. Figure 7 shows the normalized magnetization in saturation M norm = M(T)/M(300 K) versus temperature measured at magnetic field 0.5 T and heating rate 0.083 K s alloys.…”

Section: Resultsmentioning

confidence: 99%

Thermal stability, crystallization and magnetic properties of Fe-Co-based metallic glasses

Lesz

Kwapuliński

Nabiałek

et al. 2016

J Therm Anal Calorim

View full text Add to dashboard Cite

The aim of the paper was to investigate thermal stability, crystallization and magnetic properties of Fe-Cobased metallic glasses (MGs 4 . Thermal properties (liquidus T l and melting T m temperatures) of the pre-alloyed ingots upon heating and cooling were analyzed by DTA at a heating/cooling rate of 0.33 K s -1 under the purified argon atmosphere. The structure of the ribbons was examined by X-ray diffraction (XRD) and transmission electron microscopy (TEM) method. Kinetics of the crystallization process was examined by applying differential scanning calorimetry (DSC) method, and experiments performed in thermal analysis involve heating at a constant rates b = 0.17, 0.33 and 0.5 K s -1 . Additionally, the conventional crystallization temperature T x was determined from the normalized isochronal resistivity curves a(T) with heating rate 0.0083 K s -1 . a is the temperature coefficient of resistance and a = q

show abstract

“…[34] However, minor additions of Cu may change the crystallization behavior of Fe-based BMG. For example, in (Fe, Co)-B-Si-Nb BMGs with Cu additions, Stoica et al [35,36] reported the formation of a-Fe phase, while in the base alloy typically the complex Fe 23 B 6 phase precipitates upon heating. [35] Ohkubo et al [37] observed special orientation relationship between fcc-Cu and a-Fe primary phase in Fe-Zr-BCu amorphous alloy.…”

Section: Resultsmentioning

confidence: 99%

Crystallization Kinetics of Fe76.5−x C6.0Si3.3B5.5P8.7Cu x (x = 0, 0.5, and 1 at. pct) Bulk Amorphous Alloy

Jung

Stoica

Sangbong

et al. 2014

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

The influence of Cu on crystallization kinetics of Fe 76.5Àx C 6.0 Si 3.3 B 5.5 P 8.7 Cu x (x = 0, 0.5, and 1 at. pct) bulk amorphous alloys was investigated by isothermal and isochronal differential scanning calorimetry combined with X-ray diffraction. The thermal analysis revealed that the crystallization of the amorphous matrix proceeds through at least two exothermic events. The Cufree glassy alloy forms by primary crystallization the metastable Fe 23 C 6 phase, while upon 0.5 at. pct Cu addition the primary crystallized phase is a-Fe. The activation energy for crystallization, calculated using both Kissinger and Ozawa methods, decreases from about 500 kJ/mol to about 330 kJ/mol. Further increase of Cu addition to 1 at. pct promotes the concomitant crystallization of several phases, as a-Fe, FeB, Fe 3 C, and Fe 2 P. In order to understand the crystallization behavior of the alloys as a function of Cu content, the Avrami exponent n, evaluated from the Johnson-Mehl-Avrami equation, was in details analyzed. The current study reveals that the minor Cu addition plays a crucial role at the initial stage of the crystallization. Among the studied alloys, the glassy samples with 0.5 at. pct Cu addition have the optimum compositional condition for the single a-Fe formation with a high nucleation rate.

show abstract

Thermal stability and magnetic properties of FeCoBSiNb bulk metallic glasses

Cited by 52 publications

References 29 publications

Viscosity and fragility of the supercooled liquids and melts from the Fe–Co–B–Si–Nb and Fe–Mo–P–C–B–Si glass-forming alloy systems

Viscosity and fragility of the supercooled liquids and melts from the Fe–Co–B–Si–Nb and Fe–Mo–P–C–B–Si glass-forming alloy systems

Thermal stability, crystallization and magnetic properties of Fe-Co-based metallic glasses

Crystallization Kinetics of Fe76.5−x C6.0Si3.3B5.5P8.7Cu x (x = 0, 0.5, and 1 at. pct) Bulk Amorphous Alloy

Contact Info

Product

Resources

About