FIM STUDY ON THE RELAXATION AND CRYSTALLIZATION PROCESSES OF A Cu-Zr AMORPHOUS ALLOY

摘要

The relaxation of the Cu-50at.%Zr amorphous alloy was revealed by FIM as a process of formation of clusters consisting of 2.3.or 4 atoms,Which afterwards migrate towards some definite centers,predominantly the quenched-in''embryos'',to construct ordered structure.This dynamic picture,so far as we know,is observed for the first time.Crystallized regions were determined by atom-probe analysis as Cu10Zr7 phase,and the coexisting phase CuZr2 was not revealed simultaneously.