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

Lee, S. Y. and Kim, C. P. and Almer, J. D. and Lienert, U. and Ustundag, E. and Johnson, W. L. (2007) Pseudo-binary phase diagram for Zr-based in situ ß phase composites. Journal of Materials Research, 22 (2). pp. 538-543. ISSN 0884-2914. http://resolver.caltech.edu/CaltechAUTHORS:LEEjmr07

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Abstract

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


Item Type:Article
Additional Information:© 2007, Materials Research Society. (Received 17 June 2006; accepted 31 October 2006) The authors would like to thank Jin-Yoo Suh at Caltech for assisting sample preparation as well as Minha Lee at Ames National Laboratory for help with SEM observation.
Record Number:CaltechAUTHORS:LEEjmr07
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LEEjmr07
Alternative URL:http://dx.doi.org/10.1557/JMR.2007.0066
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7592
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:10 Mar 2007
Last Modified:26 Dec 2012 09:33

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