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Deformation‐induced microstructural heterogeneity in monolithic Zr44Ti11Cu9.8Ni10.2Be25 bulk metallic glass

We present investigations on the development of microstructural inhomogeneity introduced by simple room temperature deformation for a typical bulk metallic glass (Zr44Ti11Cu9.8Ni10.2Be25). The experimental evidence (e.g., transmission electron microscopy, electron energy dispersive X‐ray spectroscopy and density measurements) clearly supports that an inhomogeneous glassy structure can be produced during deformation in the bulk metallic glass, that does not depend on a specific pinpointed chemical composition. The micrometer‐sized structural inhomogeneity in the monolithic bulk metallic glass originates from deformation due to the introduction of a high concentration of free volume in the glassy phase without significant change in the local chemical composition. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)