利用标准的单辊甩带技术在大气环境下制备了Fe73.5Si13.5B9Cu1Nb3-xVx(x=1,2)非晶条带.利用非等温DSC测量研究了非晶条带的初始结晶动力学行为.采用Kissinger方法计算了非晶条带的初始结晶激活能,其数值分别是302kJ/mol(x=1)和364kJ/mol(x=2).Avrami因子n的计算结果分别为2.35(x=1)和1.61(x=2),Avrami因子的计算结果表明,非晶条带非等温初始结晶的机理为扩散控制的低维生长,且其形核率不断降低.在793、823和853K下分别对非晶条带进行真空等温退火1h,从而在非晶基体中形成纳米晶相.XRD分析结果表明,823和853K下真空等温退火1h后,x=1和2非晶条带中析出的α-Fe(Si)相的平均晶粒尺寸分别为12.8、14.0、13.3和14.2nm.
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