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Room Temperature Homogeneous Ductility of Micrometer‐Sized Metallic Glass
Author(s) -
Tönnies Dominik,
Maaß Robert,
Volkert Cynthia A.
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201401123
Subject(s) - materials science , brittleness , ductility (earth science) , mesoscopic physics , amorphous metal , plasticity , deformation (meteorology) , composite material , amorphous solid , shear (geology) , shear band , condensed matter physics , crystallography , alloy , creep , physics , chemistry
Homogeneous ductile flow of metallic glasses is observed at the micrometer scale. It is shown that this unusual deformation mode of an otherwise brittle material depends on both specimen size and applied loading rate. The results are explained by intrinsic length‐scale effects of nanometer‐sized defects, and provide a rationale for the long term debated brittle‐to‐ductile transition of amorphous metals.