Effect of relaxation state on nucleation and grain growth of nanoscale quasicrystal in Zr-based bulk metallic glasses prepared under various cooling rates

Junji Saida, Setyawan Albertus Deny Heri, Eiichiro Matsubara

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10 Citations (Scopus)

Abstract

Zr 65Al 7.5Ni 10Cu 12.5Pd 5 bulk metallic glasses (BMGs) in various relaxation states were prepared under different cooling rates. The grain growth rate of the primary quasicrystal was examined near the crystallization temperature. It was approximately 1 × 10 -9 m/s in less relaxed BMGs and approximately twice as large in relaxed BMGs. In contrast, the calculated homogeneous nucleation rate of the less relaxed samples was five to ten times higher (5 × 10 19-1 × 10 20/m 3s) than those in the relaxed BMGs. The results indicate that the relaxation state of glassy alloys has a marked effect on nucleation and grain growth behaviors.

Original languageEnglish
Article number061903
JournalApplied Physics Letters
Volume99
Issue number6
DOIs
Publication statusPublished - 2011 Aug 8

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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