【摘要】 采用Ｘ 射线衍射（ＸＲＤ），杨氏模量测量方法研究了非晶态Ｆｅ７３．５Ｃｕ１Ｎｂ３Ｓｉ１３．５Ｂ９ 合金５００℃等温晶化时，纳米αＦｅ（Ｓｉ）晶相的平均晶粒尺寸（ｄ），晶化体积分数（ Ｖｃ），杨氏模量（ Ｅ）随保温时间（ｔ）的变化．ｄｔ 关系具有阶梯式长大特征，而Ｅｔ 关系则呈现相应的周期性变化．分别计算了纳米αＦｅ（Ｓｉ）晶生长前沿非晶区的化学成分以及晶间非晶区平衡化学成分．由Ｆｉｃｋ 扩散方程计算晶间非晶区成分均匀化的时间，与纳米αＦｅ（Ｓｉ）阶梯式长大周期相当．Ｅｔ 关系的振荡性变化可能是由扩散控制的纳米αＦｅ（Ｓｉ）晶相的阶梯式长大与晶间非晶区周期性弛豫引起的更多还原

【Abstract】 Amorphous alloys Fe\-\{73.5\}Cu\-1Nb\-3Si\-\{13.5\}B\-9 prepared by a melt\|spinning technique were annealed at a temperature of 500℃ for different times.The change of the average grain size( d ),the volume fraction( V c) of the α\|Fe phase and the Young’s modulus with the annealing time( t ) were investigated by X\|ray diffraction(XRD) and Modulus measurements.The relation of d\|t shows that the α\|Fe phase has the character of staged\|growth.The relation of E\|t has an oscillating behavior.The chemical composition of the amorphous layer surrounding the α\|Fe phase and the balanced chemical composition of the grain\|boundary amorphous layers were calculated.The time of the composition balanced was calculated by using Fick equation,it had the same scale with the period of the α\|Fe phase staged\|growth.The oscillating behavior of E\|t may come from the staged\|growth of α\|Fe phase controlled by Nb atom diffusion and the periodical structural relaxation of grain\|boundary amorphous layers.更多还原