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本文应用TEM和M(?)ssbauer谱系统研究了Fe-25Cr-12Co-1Si合金在分级回火过程中磁性能与微观组织以及超精细结构变化的相互关系。结果表明,随分级回火进行,合金磁性能不断提高主要是源于其微观组织中调幅分解产生的α_1和α_2两相的饱和磁化强度差别的增加,这种差别是由两相成分差别导致的。调幅分解生成的单畴粒子的形状各向异性不是Fe-Cr-Co合金在分级回火过程中磁性能提高的决定性因素。
In this paper, TEM and M (?) Ssbauer spectroscopy was used to study the relationship between the magnetic properties, the microstructure and the microstructure of the Fe-25Cr-12Co-1Si alloy during the fractional tempering. The results show that with the gradual tempering, the continuous improvement of the magnetic properties of the alloy is mainly due to the difference of the saturation magnetization between the α_1 and α_2 phases generated by the amplitude modulation decomposition in the microstructure. This difference is caused by the difference of the two phase components . The shape anisotropy of monodomain particles generated by amplitude modulation decomposition is not the decisive factor for improving the magnetic properties of the Fe-Cr-Co alloy during the fractional tempering.