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Solidification behavior, glass forming ability and thermal characteristics of soft magnetic Fe-Co-B-Si-Nb-Cu bulk amorphous alloys
Date
2011-09-01
Author
AYKOL, Muratahan
Akdeniz, Mahmut Vedat
Mehrabov, Amdulla
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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The effect of varying Cu content on the bulk glass forming ability (GFA) of (Fe(0.36)Co(0.36)B(0.192)Si-(0.048)Nb(0.04))(100-X)Cu(X) alloys (X = 0, 0.5, 0.75 and 1.0) is revealed by investigating the thermal behaviors and phase competitions upon solidification. The changes in GFA are interpreted in terms of suppression of consecutive solidification reactions via microstructural and thermal features. Instead of the type of the primary crystallization product originating from the prevalent atomic order in the glass or supercooled liquid, precipitation of faceted binary and higher-order pro-eutectic compounds such as (Fe,Co)(2)B and (Fe,Co)NbB from the alloy melt and resulting skewed eutectic coupled zone are correlated with the observed GFA. With the employed centrifugal casting method, the (Fe(0.36)Co(0.36)B(0.192)-Si(0.048)Nb(0.04))(99.25)Cu(0.75) alloy shows the largest critical thickness of 3 mm and the best soft magnetic properties such as 1.58 T saturation magnetization intensity and 11.7 A/m coercivity after annealing.
Subject Keywords
Glasses
,
Metallic
,
Thermal stability
,
Magnetic properties
,
Rapid solidification processing
URI
https://hdl.handle.net/11511/37803
Journal
INTERMETALLICS
DOI
https://doi.org/10.1016/j.intermet.2011.05.004
Collections
Department of Metallurgical and Materials Engineering, Article