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Microstructural change upon annealing FeZrB alloys with different boron contents by K.Y Kim; T.H Noh; I.K Kang; T Kang is a Engineering article available to read on EtoBox.

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To clarify the reason for the change in effective permeability with increasing boron content before and after crystallization, we investigated the microstructure of F%.~ xZrTB, (x = 2, 4, 6, 8) alloys annealed for 1 h in the temperature range 350-600 °C, using transmission electron microscope. In low boron alloys (x = 2, 4), the amorphous phase showed indications of a typical interconnected pattern, exhibiting a spinodal-type decomposition. After crystallization, it changed to a mainly single b.c.c, structure with a homogeneous grain size distribution of about 20 nm, and the effective permeability had a high value of around 19000. In high boron alloys (x = 6, 8), the microstructure after crystallization showed an inhomogeneous grain size distribution, and a low effective permeability. These results may be the result of the different phase separation pattern in the amorphous state.

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Author

K.Y Kim; T.H Noh; I.K Kang; T Kang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-5093)

Published

1994

Language

EN

Field

Engineering (Physical Sciences)