The crystallization process of Fe78Zr7 B15 (at%) amorphous ribbon was investigated by X-ray diffraction (XRD), differential scanning calorimetry and scanning electron microscopy (SEM). The fully amorphous structure of as-quenched (Aq) ribbons was confirmed by XRD pattern. The saturation magnetization ( M s) and Curie tem-perature of the Aq ribbon were measured as 124.3 (A m 2)/kg and 305 C with vibrating sample magnetometer (VSM), respectively. When the ribbons was annealed at 550 C near the first onset temperature (Tx1 = 564.9 C), the Ms was increased by 17 %, which was caused by the formation of a dual phase structure. The isothermal crystallization kinetics and crystallization mechanism of primary a-Fe phase in the dual phase structure were studied by Arrhenius and Johnson-Mehl-Avrami-Kolmogorov equations respectively. The results showed that the crystallization of a-Fe phase was a diffusion-controlled surface nucleation growth process,and the nucleation rate decreased with longer crystallization time.
Bing-Ge Zhao Ling-Hong Kong Ting-Ting Song Qi-Jie Zhai Yu-Lai Gao
. Phase precipitation and isothermal crystallization kinetics of FeZrB amorphous alloy[J]. Advances in Manufacturing, 2013
, 1(3)
: 251
-257
.
DOI: DOI10.1007/s40436-013-0033-2
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