Crystallization Process of Fe75Co5Zr10B10 Amorphous Alloy |
| Y.M. Sun, B. Zuo, D. Wang, X.C. Meng, J. Liu, L.L. Wang and Z. Hua
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, Jilin, China |
| Received: December 21, 2012; In final form: May 5, 2013 |
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| Fe75Co5Zr10B10 amorphous alloy prepared by melt-spinning was annealed at various temperatures. The thermal property and microstructures were investigated by differential thermal analysis, X-ray diffraction, and transmission electron microscopy. The crystallization process of Fe75Co5Zr10B10 amorphous alloy is complex. The α-Fe phase precipitates from the amorphous matrix in the initial stage of crystallization. The α-Mn type (χ) phase precipitates at 570°C, but transforms to α-Fe phase and the Laves C14(λ) phase at higher temperature. In the final stage of crystallization, Fe3Zr, Fe2Zr, and unknown phases are observed and the λ-phase disappears. The α-Fe phase preferentially nucleates after annealing at 530°C for 10 min and the χ-phase preferentially nucleates after annealing at 600°C for 10 min. The nucleation barrier of χ-phase is larger than that of α-Fe phase. The local structure of χ-phase is more similar to amorphous phase. |
DOI: 10.12693/APhysPolA.124.685 PACS numbers: 61.43.Dq, 64.60.My |