Pseudo-binary phase diagram for Zr-based in situ beta phase composites


Lee S. Y. , KIM C. P. , ALMER J. D. , LIENERT U., Ustundag E. , JOHNSON W. L.

JOURNAL OF MATERIALS RESEARCH, cilt.22, ss.538-543, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 22 Konu: 2
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1557/jmr.2007.0066
  • Dergi Adı: JOURNAL OF MATERIALS RESEARCH
  • Sayfa Sayıları: ss.538-543

Özet

The pseudo-binary (quasi-equilibrium) phase diagram for Zr-based bulk metallic glasses with crystalline in situ precipitates (beta phase) has been constructed from high-temperature phase information and chemical composition analysis. The phase evolution was detected in situ by high-energy synchrotron x-ray diffraction followed by Rietveld analysis of the data for volume fraction estimation. The phase diagram delineates phase fields and allows the control of phase fractions. Combined with related previous work by the authors, this diagram offers a unique opportunity to control both the morphology and volume of the dendritic beta phase precipitates to enhance the properties of the composites.