Notch toughness of Fe-based bulk metallic glass and composites

S. F. Guo, Kang Cheung Chan, L. Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)

Abstract

The notch fracture toughness of Fe75Mo5P10C8.3B1.7monolithic bulk metallic glass (BMG) and Fe77Mo5P9C7.5B1.5and Fe79Mo5P8C6.7B1.3BMG matrix composites with α-Fe as reinforcing phase, fabricated by suction mould casting, were evaluated. It was found that the monolithic BMG has a toughness of 27 MPa m1/2, while the Fe77Mo5P9C7.5B1.5BMG composite reinforced by single α-Fe dendrite phase exhibits a higher toughness of nearly 40 MPa m1/2. However, for the Fe79Mo5P8C6.7B1.3alloy with more dendrites, the toughness decreased up to 25 MPa m1/2. Microstructure investigation reveals that the simultaneous formation of Fe-Mo-P hard brittle phase apart from α-Fe dendrites in the Fe79Mo5P8C6.7B1.3alloy is the reason for the degradation of the fracture toughness.
Original languageEnglish
Pages (from-to)9441-9446
Number of pages6
JournalJournal of Alloys and Compounds
Volume509
Issue number39
DOIs
Publication statusPublished - 29 Sep 2011

Keywords

  • Amorphous materials
  • Mechanical properties
  • Microstructure
  • Quenching
  • Rapid-solidification

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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