Indentation behavior of a ZCAP-3 bulk metallic glass: Effects of the fatigue deformation

Fuqian Yang, Hongmei Dang, Gongyao Wang, Yoshihiko Yokoyama, Peter K. Liaw

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The effects of the fatigue deformation on the localized deformation of a ZCAP-3 bulk metallic glass (BMG) were studied using the nanoindentation technique. A localized mechanical hardening was observed in the ZCAP-3 BMG between the shear bands in the fatigue-damaged zone. In contrast to the indentations of the BMG made far away from the fatigue-damaged zone, there was no indentation size effect. Both the reduced contact modulus and the indentation hardness were larger than those corresponding to the indentations of the ZCAP-3 BMG in the undamaged zone. These observations revealed the possible effects of local heating and stress-induced atomic rearrangements (i.e., inelastic deformation) on the reduction of the free volume in the BMG from the propagation of the fatigue crack.

Original languageEnglish
Pages (from-to)2346-2352
Number of pages7
JournalJournal of Materials Research
Volume24
Issue number7
DOIs
Publication statusPublished - 2009 Jul

ASJC Scopus subject areas

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

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