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对非晶合金Fe78Si9B13进行了超短脉冲电流处理,实现了晶化时αFe(Si)单相结构析出.可以认为,脉冲电流作用时,电子运动与非晶中空位型结构缺陷间的周期性排斥效应促进了类金属原子从非晶结构单元中析出,使Fe(Si)原子局部富集,导致基体金属相在较低温度下优先成核.而在空位的定向迁移的同时,将伴随B原子的扩散,则B原子局域富集,FeB化合物的形核析出就要受到这两个因素的抑制
Ultra-short pulse current treatment of amorphous alloy Fe78Si9B13 was carried out to realize the precipitation of αFe (Si) single phase structure during crystallization. It can be considered that the periodic repulsive effect between the electron motion and the structural defects of the amorphous vacancies promotes the precipitation of the metalloid atoms from the amorphous structural unit when the pulse current is applied and locally enriches the Fe (Si) atoms, Phase preferentially nucleates at lower temperatures. While the directional migration of vacancies will be accompanied by the diffusion of B atoms, then the local enrichment of B atoms and the precipitation of Fe-B compounds will be inhibited by these two factors