Correlation Between Internal States and Strength in Bulk Metallic Glass

  • J. Tan
  • C. J. Li
  • Y. H. Jiang
  • R. Zhou
  • J. Eckert
Conference paper

Abstract

The internal states or local structures of bulk metallic glass (BMGs) can be well reflected from the changes of density, structural relaxation as well as the elastic constants. With the increasing free volume (FV) content, more local atomic clusters are capable of simultaneous plastic shear at different sites in the metallic glasses, inducing large plasticity. In this work, we report a close correlation between the internal states and strength in a BMG and discover that the yield strength can be changed by varying of the casting current, revealing that the yielding strength of BMGs is not only intrinsically associated with the glass transition, but also with the internal states, such as free volume and elastic properties. Such results may have some implications for understanding the correlations between the internal states and mechanical properties of BMGs.

Keywords

bulk metallic glass free volume strength internal states glass transition 
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Copyright information

© TMS (The Minerals, Metals & Materials Society) 2013

Authors and Affiliations

  • J. Tan
    • 1
    • 2
    • 3
  • C. J. Li
    • 1
    • 2
  • Y. H. Jiang
    • 1
  • R. Zhou
    • 1
  • J. Eckert
    • 2
    • 3
  1. 1.School of Materials Science and EngineeringKunming University of Science and TechnologyKunmingChina
  2. 2.IFW DresdenInstitute for Complex MaterialsDresdenGermany
  3. 3.TU DresdenInstitute of Materials ScienceDresdenGermany

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