Reversible transition of deformation mode by structural rejuvenation and relaxation in bulk metallic glass

Fanqiang Meng, Koichi Tsuchiya, I. Seiichiro, Yoshihiko Yokoyama

Research output: Contribution to journalArticlepeer-review

107 Citations (Scopus)

Abstract

A transition of the deformation mode from heterogeneous, localized deformation to homogeneous deformation was observed in Zr 50Cu 40Al 10 bulk metallic glass (BMG) by giant straining using the high-pressure torsion (HPT) method. The transition is accompanied by a pronounced decrease in hardness and elastic modulus as measured by nanoindentation. Annealing of the deformed BMG resulted in the restoration of the localized deformation, hardness, and elastic modulus; thus, the transition is reversible. The observed reversible transition can be attributed to a change in the local atomic environment in the rejuvenated volume and the relaxed one.

Original languageEnglish
Article number121914
JournalApplied Physics Letters
Volume101
Issue number12
DOIs
Publication statusPublished - 2012 Sep 17

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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