Effect of Planar Flow Melt Spinning Parameters on Ribbon Formation in Soft Magnetic Fe^sub 68.5^Si^sub 18.5^B^sub 9^Nb^sub 3^Cu^sub 1^ Alloy

The effect of planar flow melt spinning (PFMS) parameters on the continuity, surface quality, and structure of 10-mm-wide Fe^sub 68.5^Si^sub 18.5^B^sub 9^Nb^sub 3^Cu^sub 1^ ribbons has been investigated. The change in shape and stability of the melt puddle as a function of the processing parameter w...

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Bibliographic Details
Published in:Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2011-04, Vol.42 (2), p.370
Main Authors: Srinivas, M, Majumdar, B, Phanikumar, G, Akhtar, D
Format: Article
Language:English
Subjects:
Alloy solidification
Alloys
High temperature
Melting
Metallurgy
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Summary:The effect of planar flow melt spinning (PFMS) parameters on the continuity, surface quality, and structure of 10-mm-wide Fe^sub 68.5^Si^sub 18.5^B^sub 9^Nb^sub 3^Cu^sub 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. [PUBLICATION ABSTRACT]
ISSN:1073-5615
1543-1916