In-situ formation of Ta-rich reinforced Zr-Cu amorphous matrix composites was performed by dealloying method.The difference of the second phase in composites prepared by the conventional arc-melting method and novel dealloying method was analyzed comparatively

and effects of dealloying on the second phase at different temperatures were expounded comparatively.Compared with that in the composites prepared by the conventional arc-melting method

the second phase in the composites prepared by the dealloying method presents finer in size

higher number density and larger in unit interface area

which is beneficial to the improvement of strength and plasticity.Meanwhile

as the dealloying reaction temperature increases

the size and volume content of the second phase are decreased

and hardness of the amorphous matrix and the second phase are increased.