Stress-induced structural change during superplastic deformation of bulk Zr-based metallic glass

X. L. Guo, Kang Cheung Chan, L. Liu, D. B. Shan, B. Guo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

The stress distribution of Zr41.2Ti13.8Cu12.5Ni10Be22.5metallic glass subjected to uniaxial compression in the supercooled liquid region was examined. The FEM results indicate a triaxial compressive stress at the top surface and core regions, and a compress-tensile stress at the circumferential region. Microhardness and thermal properties of the three regions were analyzed. It was found that the circumferential region had less crystallization and smaller hardness value. In order to vary the stress state, a constraining aluminum ring was also applied to the BMG specimen for a compression test. The findings show that the crystallization behavior and stress states of the BMG with the aluminum ring are different from that without the ring. The stress-induced structural change of the BMG is analyzed in the paper in terms of the spheric stress and the effective strain.
Original languageEnglish
Pages (from-to)534-539
Number of pages6
JournalMaterials Science and Engineering A
Volume499
Issue number1-2
DOIs
Publication statusPublished - 15 Jan 2009

Keywords

  • Crystallization
  • Metallic glass
  • Stress state

ASJC Scopus subject areas

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

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