Glass forming ability in Cu-Zr binary alloy: Effect of nucleation mode

W. Yang, F. Liu, H. Liu, H. F. Wang, Z. Chen, G. C. Yang

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

In the present work, thermodynamic and kinetic calculations were combined to study the glass forming ability of Cu-Zr binary system. Applying thermodynamic association model, the primarily crystallized phase and its corresponding driving force can be determined firstly. Then, the whole Time-Temperature-Transformation (TTT) diagrams basing on homogeneous and heterogeneous nucleation modes have been constructed quantitatively. As for the former case, the critical cooling rate is underestimated by about three orders of magnitude in comparison with the experimental observation. As for the latter case adopting suitable values of catalytic factor f(θ) and potential nuclei N1, the predictions agree well with the experimental results, and moreover, the nose temperature of TTT diagram is upper-shifted. This has been discussed using a competition of the atomic mobility and the reduced nucleation barrier, as well as its further effect on the nucleation and growth process.

Original languageEnglish
Pages (from-to)702-707
Number of pages6
JournalJournal of Alloys and Compounds
Volume484
Issue number1-2
DOIs
StatePublished - 18 Sep 2009

Keywords

  • Kinetics
  • Metallic glasses
  • Phase transformation
  • Thermodynamic modeling

Fingerprint

Dive into the research topics of 'Glass forming ability in Cu-Zr binary alloy: Effect of nucleation mode'. Together they form a unique fingerprint.

Cite this