The nanocrystal and its thermal stability in Ti₄₀Zr ₂₅Ni₈Cu₉Be₁₈ metallic glass during homogeneous deformation

For Ti₄₀Zr₂₅Ni₈Cu₉Be ₁₈ metallic glass, nanocrystal forms in the as-cast amorphous matrix during fast cooling from supercooled liquid, and precipitates from amorphous matrix during heating process. The thermal stability of the nanocrystals during homogeneous temperature is influenced by deformation temperature. At relative low deformation temperature (below T_x-40K), the nanocrystal is very stable. Contrarily, nanocrystal exhibits low thermal stability at relative high deformation temperature (above T_x-40K). Moreover, nanocrystal precipitated during heating process possesses better thermal stability than nanocrystal existed in as cast condition at the same deformation temperature.