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将Co66Fe4Mo2Si16B12非品合金在460℃等温退火30～120min。合金在460℃等温退火过程中，相对起始磁导率μi随退火时间的延长先增大，在t≈45min时达到最大值，然后随着退火时间的延长快速下降。电子衍射花样的结果表明，合金此时仍保持非品态结构．同时发现，合金的饱和磁致伸缩系数λs随退火时间的延长由负值逐渐变为正值，当t＝45min时，λs≈0，由此可知，合金在等温退火过程中相对起始磁导率的峰值与零磁致伸缩系数相对应。
Co66Fe4Mo2Si16B12 non-alloy alloy isothermal annealing at 460 ℃ 30 ~ 120min. During the isothermal annealing at 460 ℃, the relative initial permeability μi first increases with annealing time, reaches the maximum at t≈45min and then decreases rapidly with annealing time. The results of the electron diffraction pattern show that the alloy remains non-crystalline at this time. At the same time, it is found that the saturation magnetostriction coefficient λs of the alloy gradually changes from negative to positive when the annealing time prolongs. When t = 45min, λs≈0, we can see that the relative initial permeability of the alloy during isothermal annealing The peak rate corresponds to the zero magnetostriction factor.