Local crystallization induced in Fe-based amorphous alloys by swift heavy projectiles

The crystallization process of Fe 78 Zr 7 B 15 (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 temperature of the Aq ribbon were measured as 124.3 (AÁm 2 )/kg and 305°C with vibrating sample magnetometer (VSM), respectively. When the ribbons was annealed at 550°C near the first onset temperature (T x1 = 564.9°C), the M s 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.

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Local crystallization induced in Fe-based amorphous alloys by swift heavy projectiles

Cited by 18 publications

References 41 publications

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