Effect of strain rate on compressive behavior of Ti45Zr16Ni9Cu10Be20 bulk metallic glass

Jia Zhang, Jin Man Park, Do Hyang Kim, Hyoung Seop Kim

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Abstract

Compressive behavior of Ti45Zr16Ni9Cu10Be20 (numbers indicate at.%) bulk metallic glasses was investigated at strain rates ranging from 10-4 to 10-1 s-1. Little effect of strain rate on the mechanical properties is observed in an amorphous specimen when the strain rates are below 10-3 s-1. An appreciable total strain of about 5% is observed and the plastic flow is serrated. However, a positive strain rate dependence of yield strength is found when the strain rate reaches 10-1 s-1, which is reported for the first time in metallic glasses under a compressive loading condition. Further, the macroscopic plastic strain distinctly decreases and flow serration vanishes at a high strain rate. A comparison of the significantly different mechanical behavior of Ti45Zr16Ni9Cu10Be20 bulk metallic glass with other bulk metallic glass systems is also presented.

Original languageEnglish
Pages (from-to)290-294
Number of pages5
JournalMaterials Science and Engineering A
Volume448-451
DOIs
Publication statusPublished - 2007 Mar 25

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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