Critical cooling rate for the glass formation of ferromagnetic Fe40Ni40P14B6 alloy
Critical cooling rate for the glass formation of ferromagnetic Fe40Ni40P14B6 alloy
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DOI：
10.1016/j.matlet.2006.11.058
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发表时间：
2006-11
影响因子：
3
通讯作者：
Qiang Li
中科院分区：
文献类型：
--
作者：
Qiang Li
采用快速凝固技术制备了Fe-Ni-P-B块状非晶合金。制备的最大非晶样品直径为2.5mm，通过有限差分数值计算，估算出该合金系统玻璃形成的冷却速率约为492.4K/s。该值与用连续冷却转变（CCT）曲线法估算的Fe_（40）Ni_（40）P_（14）B_6合金的临界冷却速率R_c在同一数量级上。实验结果表明，该方法能较好地去除非均相杂质。
Bulk ferromagnetic amorphous Fe–Ni–P–B alloys in rod shape were formed by a rapid solidification technique. The largest amorphous specimen prepared had a diameter of ∼2.5 mm and the corresponding cooling rate for the glass formation of this alloy system in our experiment can be estimated to be around 492.4 K/s by the method of finite-difference numerical calculation. This value is on the same order of magnitude as the critical cooling rate Rcof Fe40Ni40P14B6alloy estimated by the method of constructing the continuous-cooling-transformation (CCT) curve. It is indicated that the heterophase impurities have been eliminated well in our experiment.