Abstract
In situ heating, synchrotron radiation X-ray diffraction has been used to study the alloying and phase transformation behavior of TiH2-6Al-4V and Ti-6Al-4V alloys. Accelerated alloying and phase transformation were observed in the powder compact of the TiH2-6Al-4V alloy subjected to a high heating rate. In addition, an oxygen-stabilized Ti4Fe2O phase, which is present as sub-micron or nanoscaled particles, has been identified in the TiH2-6Al-4V alloy. The implications of these experimental findings have been discussed in terms of alloying, improved densification and oxygen scavenging in titanium and titanium alloys.
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We thank the Australian Synchrotron for access to the beamline (Powder Diffraction) and a Travel Grant. M.Y. further acknowledges the support of a JSPS Fellowship (Invitation; Short Term; No. S13717). The project was partially funded by the Australian Research Council (ARC) through the Linkage Projects programme. Constructive suggestions and comments received from the reviewers are acknowledged.
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The first author of this paper had extensive discussions with Dr. Kohara during his visit to Dr. Kohara’s lab in the SPring-8 Japan Synchrotron. Dr. Kohara’s experience in synchrotron radiation has contributed a lot to the present study.
Manuscript submitted July 13, 2014.
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Yan, M., Dargusch, M.S., Kong, C. et al. In Situ Synchrotron Radiation Study of TiH2-6Al-4V and Ti-6Al-4V: Accelerated Alloying and Phase Transformation, and Formation of an Oxygen-Enriched Ti4Fe2O Phase in TiH2-6Al-4V. Metall Mater Trans A 46, 41–45 (2015). https://doi.org/10.1007/s11661-014-2631-4
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DOI: https://doi.org/10.1007/s11661-014-2631-4