Oxygen embrittlement in a Cu-Hf-Al bulk metallic glass

S. V. Madge, Takeshi Wada, Dmitri Valentinovich Louzguine, A. L. Greer, A. Inoue

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Compression testing shows that at low-oxygen levels (240 ppm) the Cu49Hf42Al9 glass deforms predominantly by shear and is quite tough. Specimens with higher oxygen levels (1700 ppm) have oxygen-containing dendrites in an amorphous matrix and show no plasticity. Importantly, the dominant fracture mode is not shear but local tensile failure. Although there is a slight reduction in the toughness of the glassy matrix, the severe embrittlement is primarily because of the brittle dendrites that facilitate crack initiation and propagation.

Original languageEnglish
Pages (from-to)540-543
Number of pages4
JournalScripta Materialia
Volume61
Issue number5
DOIs
Publication statusPublished - 2009 Sep 1

Keywords

  • Bulk amorphous materials
  • Cu-based bulk metallic glasses
  • Embrittlement
  • Metallic glasses
  • Toughness

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Oxygen embrittlement in a Cu-Hf-Al bulk metallic glass'. Together they form a unique fingerprint.

Cite this