  The early stage evolution of local atomic structures in a multicomponent
metallic glass during its crystallization process has been investigated via
molecular dynamics simulation. It is found that the initial thermal stability
and earliest stage evolution of the local atomic clusters show no strong
correlation with their initial short-range orders, and this leads to an
observation of a novel symmetry convergence phenomenon, which can be understood
as an atomic structure manifestation of the ergodicity. Furthermore, in our
system we have quantitatively proved that the crucial factor for the thermal
stability against crystallization exhibited by the metallic glass, is not the
total amount of icosahedral clusters, but the degree of global connectivity
among them.
