Viscosity Measurements of Fe-Si-B-Cu-Nb-C Metallic Glass Melts by an Oscillating Crucible Method

Li, Chengdong; Tian, Xuelei; Chen, Xichen; Ilinsky, A.G.

doi:10.1088/0256-307x/20/3/323

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…[7] The values of temperature-dependent viscosity (g) and surface tension (r) have been taken from the measured values of the similar systems given by Chen Dong et al [24] and Tomut and Chiriac, [25] respectively. Figure 11 shows the processing map for successful (continuous ribbon without defects having minimum length of 1 m and same width as nozzle slit length) and unsuccessful runs (ribbons having either porosity, width less than desired, or length less than 1 m).…”

Section: B Window Of Process Parametersmentioning

confidence: 99%

“…where g is the viscosity of the undercooled melt, ln g ¼ 6:75 Â 10 À5 þ 954:71 TÀ608:36 (Volger-Fulcher relation) given by Chen Dong et al [24] a 0 is the average atomic diameter, f is the fraction of sites on the interface where atoms are added or removed % 0.2 DT r , N v = number of atoms per unit volume, T = temperature (K), T r = reduced temperature = T/T m , DT r = reduced under cooling = (T m -T)/T m , and DH f = molar heat of fusion.…”

Section: B Window Of Process Parametersmentioning

confidence: 99%

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Effect of Planar Flow Melt Spinning Parameters on Ribbon Formation in Soft Magnetic Fe68.5Si18.5B9Nb3Cu1 Alloy

Srinivas

Majumdar

Phanikumar

et al. 2011

Metall Mater Trans B

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The effect of planar flow melt spinning (PFMS) parameters on the continuity, surface quality, and structure of 10-mm-wide Fe 68.5 Si 18.5 B 9 Nb 3 Cu 1 ribbons has been investigated. The change in shape and stability of the melt puddle as a function of the processing parameter was studied using a high-speed imaging system and was correlated to ribbon formation. A window of process parameters for obtaining continuous ribbons with good surface quality has been evaluated. It has been observed that thinner ribbons are found to be more continuous because of higher ductility. The higher melt temperature leads to the formation of crystalline phase in as-spun ribbons, and this deteriorates the soft magnetic properties on annealing. The experimental results are corroborated with the numerical estimates, which suggest that the critical thickness for amorphous phase formation decreases with increasing initial melt temperature.

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Section: B Window Of Process Parametersmentioning

confidence: 99%

Section: B Window Of Process Parametersmentioning

confidence: 99%