Nanoscale inhomogeneities in the glass transition of Zr 41.2Ti 13.8Cu 12.5Ni 10Be 22.5 bulk metallic glass Article

Sun, MH, Wu, ZH, Liu, GR et al. (2005). Nanoscale inhomogeneities in the glass transition of Zr 41.2Ti 13.8Cu 12.5Ni 10Be 22.5 bulk metallic glass . 22(3), 664-666. 10.1088/0256-307X/22/3/040



cited authors

  • Sun, MH; Wu, ZH; Liu, GR; Chen, X; Chen, ZJ

fiu authors

abstract

  • By using small-angle x-ray scattering technique, correlation lengths of the density fluctuation are determined for the bulk metallic glass Zr 41.2Ti 13.8Cu 12.5Ni 10Be 22.5 around the glass transition temperature T g. Nanoscale inhomogeneities were found to exist in the supercooled liquid and glass state. The correlation length was found to vary with temperature T in an exponential law δ(T) = δ 0 + A 10 exp[-(T -T ∞)/T 1], where T ∞ is the Vogel temperature, and parameters δ 0, A 1 and T 1 were simulated to be 16.45 nm, 1.88×10 29 nm, and 9.65 K, respectively, in the temperature region from T g to T g + 80 K. The correlation length of the density fluctuation obtained by the small-angle x-ray scattering method can be considered as the characteristic length of glass transition. © 2005 Chinese Physical Society and IOP Publishing Ltd.

publication date

  • March 1, 2005

Digital Object Identifier (DOI)

start page

  • 664

end page

  • 666

volume

  • 22

issue

  • 3