Malleable hypoeutectic zr-ni-cu-al bulk glassy alloys with tensile plastic elongation at room temperature

Y. Yokoyama, K. Fujita, A. R. Yavari, A. Inoue

Research output: Contribution to journalArticlepeer-review

118 Citations (Scopus)

Abstract

A new bulk glassy alloy (BGA) showing macroscopic tensile plastic elongation at room temperature has been developed in the hypoeutectic Zr-Ni-Cu-Al alloy system. The hypoeutectic Zr-Ni-Cu-Al BGA shows a high Poisson's ratio, a low Young's modulus, and is highly malleable in compression. It exhibits a Poisson's ratio of 0.39, a Young's modulus of 73 GPa, and a distinct tensile plastic elongation of about 1.7% at room temperature with necking due to the operation of many shear bands. The tensile plastic deformability seems to originate from modifications of the glass structure with increasing the number of Zr-Zr atomic pairs in the hypoeutectic composition.

Original languageEnglish
Pages (from-to)322-334
Number of pages13
JournalPhilosophical Magazine Letters
Volume89
Issue number5
DOIs
Publication statusPublished - 2009 May 1

Keywords

  • Metallic glasses
  • Tensile testing

ASJC Scopus subject areas

  • Condensed Matter Physics

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