Experimental measurements of nucleation frequency and crystal growth rate in Pd-Cu-Ni-P metallic glass

Nobuyuki Nishiyama, Akihisa Inoue

Research output: Contribution to journalConference article

9 Citations (Scopus)

Abstract

Crystallization mechanism and kinetics of a Pd40Cu30Ni10P20 glass was investigated in a wide temperature range from 603 (near the glass transition temperature) to 764 K (near the equilibrium melting temperature) by using an isothermal annealing treatment for nucleation and growth. The nucleus density (nv) is about 5×1013 nuclei/m3 and is independent of annealing temperature. Therefore, it is assumed that the crystallization of the alloy was dominated by heterogeneous nucleation due to `quenched-in nuclei'. On the other hand, the crystal growth rate (Uc) increases from 1.07×10-11 to 5.68×10-5 m/s with rising annealing temperature from 603 to 764 K. These values of Uc are 2-3 orders of magnitude larger than the calculated Uc on the basis of Classical Nucleation and Growth Theory (CNT). Furthermore, the glass-forming ability of the alloy will be discussed in the framework of the present results.

Original languageEnglish
Pages (from-to)125-130
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume554
Publication statusPublished - 1999 Dec 1
EventProceedings of the 1998 MRS Fall Meeting - Symposium MM on'Bulk Metallic Glasses' - Boston, MA, USA
Duration: 1998 Dec 11998 Dec 3

ASJC Scopus subject areas

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

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