Atomic structure evolution in bulk metallic glass under compressive stress

作者：Wang G^*; Mattern N; Pauly S; Bednarcik J; Eckert J

来源：Applied Physics Letters, 2009, 95(25): 251906.

DOI：10.1063/1.3276274

The structural behavior of Cu(64.5)Zr(35.5) bulk metallic glass under compressive stress was investigated by means of in situ high energy x-ray synchrotron diffraction. The topological and chemical short-range order of the glass changes reversible upon loading within the elastic range. The number density of Cu-(Zr,Cu) and Zr-Zr nearest neighbor atomic pairs becomes oriented along the loading direction. The macroscopic stress state is reflected by the medium-range order. The determination of the components of the strain tensor from the shift of the positions of the nearest neighbor distances is not possible due to the structure changes.

• 出版日期2009-12-21