Capture of shear crack propagation in metallic glass by high-speed camera and in-situ SEM

Bing Hou, Meng Zhao, Pei Yang, Yulong Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

The dynamic double-notched experiments by using Split Hopkinson Pressure Bars(SHPB) and high-speed camera were performed on bulk metallic glass. In the double-notched experiment, shear crack propagating process was captured with the high temporal resolution of high-speed camera and the crack front propagating velocity was estimated to be 1137m/s. The shear strain/shear stress curve of BMG under dynamic loading was also obtained. Static in-situ SEM tensile experiments were included to study the multiple shear bands propagating behavior on a glassy ribbon. It was found that shear bands propagates progressively in an intermittent and discontinuous manner, and the choice of which shear bands to propagate and which ones to keep still among multiple shear bands is quite stochastic. This is explained qualitatively from the view point of energy.

Original languageEnglish
Title of host publicationAdvances in Engineering Plasticity XII
PublisherTrans Tech Publications Ltd
Pages162-170
Number of pages9
ISBN (Print)9783038352266
DOIs
StatePublished - 2015
Event12th Asia-Pacific Conference on Engineering Plasticity and Its Application, AEPA 2014 - Kaohsiung, Taiwan, Province of China
Duration: 1 Sep 20145 Sep 2014

Publication series

NameKey Engineering Materials
Volume626
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference12th Asia-Pacific Conference on Engineering Plasticity and Its Application, AEPA 2014
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period1/09/145/09/14

Keywords

  • Bulk metallic glasses
  • High-speed camera
  • In-situ SEM
  • Shear band
  • Shear crack

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