On the brittleness of bulk metallic glasses

V. Keryvin, C. Bernard, J. C. Sangleboeuf, Y. Yokoyama, T. Rouxel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Fracture toughness studies are conducted on a Zr-based bulk metallic glass at room and low (77 K) temperatures. Samples, cast by different processing techniques, contain either crystalline defects or not. For SENB specimens containing 30 μm root radius notches, results indicate that a perfect glass without quenched-in defects is ductile at room temperature and brittle at low temperature (toughness of 72 MPa.m0.5). On the contrary, imperfect glasses are brittle at room temperatures (toughness of 50 MPa.m0.5) and brittler at low temperature (27 MPa.m0.5). Fractographic observations clearly show the embrittlement caused by the dendrites at these two temperatures. These results are discussed on the basis of previous fracture studies with respect to the oxygen content in the samples.

Original languageEnglish
Title of host publication11th International Conference on Fracture 2005, ICF11
Pages3016-3021
Number of pages6
Publication statusPublished - 2005
Externally publishedYes
Event11th International Conference on Fracture 2005, ICF11 - Turin, Italy
Duration: 2005 Mar 202005 Mar 25

Publication series

Name11th International Conference on Fracture 2005, ICF11
Volume4

Other

Other11th International Conference on Fracture 2005, ICF11
CountryItaly
CityTurin
Period05/3/2005/3/25

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Fingerprint Dive into the research topics of 'On the brittleness of bulk metallic glasses'. Together they form a unique fingerprint.

  • Cite this

    Keryvin, V., Bernard, C., Sangleboeuf, J. C., Yokoyama, Y., & Rouxel, T. (2005). On the brittleness of bulk metallic glasses. In 11th International Conference on Fracture 2005, ICF11 (pp. 3016-3021). (11th International Conference on Fracture 2005, ICF11; Vol. 4).