strain yy < 0.5, and unweakened amorphous-crystal inter-
face. Therefore, the optimization of the particle size is not
important in the development of amorphous metals with dispersed nanocrystalline particles, and the particle size is a secondary factor in the control of other factors such as atomic composition around the interface. Nonetheless, it must be noted that the probability of stable defects exist- ing in the particle increases as the particle size increases, and that such defects assist the initiation of deformation of the crystal phase.
4. 2 Crystal volume fraction efects on mechanical
properties
The flow stress and Young's modulus increase as
crystal volume fraction increases in the range of f < 35%.
When the crystal volume fraction is low or the amount
of deformation is small, the interactions between particles are weak. Hence the stress distribution is homogeneous in the particle including near the amorphous-crystal inter-