Amorphous Fe78Si9B13 alloys have been treated by low frequency pulsating magnetic field. Hyperfine structures of the original and crystallized samples were analyzed by transmission M(o)ssbauer spectroscopy. The results show that one electron in Fe atom 3d6shell jump into Si atom 3p2 shell in the Fe-Si phase, forming a stability electron group. Charge distribution around the Fe atom tend to symmetry. Orbital hybridization, distortion of lattice and disperse distribution cause the lower hyperfine magnetic field of the crystallized phase. The atomic magnetic moment tends to parallel to surface of sample.%研究了快速凝固对Fe-Mn-Si系形状记忆合金组织和性能的影响.结果表明,快速凝固由于大大细化了组织,从而导致合金屈服强度提高,同时,快速凝固试样内部容易产生较多的α'马氏体,这种预存的马氏体也有助于提高基体的强度,从而抑制不可逆塑性变形的产生,让更多的变形由应力诱发ε马氏体来承担,和轧制试样相比,形状记忆效应约提高13%～200%;快速凝固试样由于晶粒细小,晶界多,可供ε马氏体形核的位置也较多,所以ε马氏体长得比较细小,也容易发生交叉穿越的现象.
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