Cold-rolled Zr50Cu30Ni10Al10 bulk amorphous alloys with tensile plastic elongation at room temperature

Yoshihiko Yokoyama, Kiyohiro Inoue, Kenzo Fukaura

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Controlling the cold-rolled structure of the shear-band network in Zr50Cu30Ni10Al10 bulk amorphous alloys can enhance the tensile plastic deformability at room temperature Cold-rolling is useful for controlling the shear band network structure in bulk amorphous alloys. The cold-rolled structure in a bulk amorphous alloy is classified into two regions, the deformed shear-band region and non-deformed block region. Since the pre-deformed shear-band region moves more easily than the non-deformed region, the pre-deformed shear-band network movement is able to release applied tensile strain. Consequently, plastic tensile strain can be obtained in a cold-rolled bulk amorphous alloy by systematical movement of the shear-band network. In this study, we obtained a maximum tensile plastic strain of about 0.25% in 10% cold-rolled Zr50Cu30Ni10Al10 bulk amorphous alloy. The tensile fracture surface was composed of many step marks leading to the pre-introduced shear band movement.

Original languageEnglish
Pages (from-to)3199-3205
Number of pages7
JournalMaterials Transactions
Volume43
Issue number12
DOIs
Publication statusPublished - 2002 Dec

Keywords

  • Cold-rolling
  • Crystalline inclusions
  • Tensile plastic elongation
  • ZrCuNiAl bulk amorphous alloy

ASJC Scopus subject areas

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

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