Recovery of less relaxed state in Zr-Al-Ni-Cu bulk metallic glass annealed above glass transition temperature

Junji Saida, Rui Yamada, Masato Wakeda

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

The relaxation state of metallic glass is determined by the cooling rate at low temperatures in a supercooled liquid. Based on this result, we can control the relaxation state of Zr55Al10Ni5Cu 30 bulk metallic glass by recovery annealing just above the glass transition temperature (Tg). We rejuvenate the relaxation state for approximately 50% in the enthalpy of relaxation at a cooling rate of 4.4 K/s after annealing, as compared with that of the as-cast state. Mechanical softening also occurred upon the rejuvenation. The results suggest another method of controlling the structure of metallic glasses to improve their properties.

Original languageEnglish
Article number221910
JournalApplied Physics Letters
Volume103
Issue number22
DOIs
Publication statusPublished - 2013 Nov 25

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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