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

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Abstract

The pseudo-binary (quasi-equilibrium) phase diagram for Zr-based bulk metallic glasses with crystalline in situ precipitates (β 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 β phase precipitates to enhance the properties of the composites.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Iowa State University, Ames, Iowa, 50011, USA

    S. Y. Lee & E. Ustundag

  2. Department of Materials Science, California Institute of Technology, Pasadena, California, 91125, USA

    C. P. Kim & W. L. Johnson

  3. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA

    J. D. Almer & U. Lienert

Authors
  1. S. Y. Lee
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  2. C. P. Kim
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  3. J. D. Almer
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  4. U. Lienert
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  5. E. Ustundag
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  6. W. L. Johnson
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Correspondence to S. Y. Lee.

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Lee, S.Y., Kim, C.P., Almer, J.D. et al. Pseudo-binary phase diagram for Zr-based in situ β phase composites. Journal of Materials Research 22, 538–543 (2007). https://doi.org/10.1557/jmr.2007.0066

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  • DOI: https://doi.org/10.1557/jmr.2007.0066

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