Published February 1, 2001
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Journal Article
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Crystallization of amorphous Cu47-Ti34-Zr11-Ni8
Abstract
The results of a study on the crystallization of amorphous Cu47-Ti34-Zr11-Ni8 with the use of differential scanning calorimetry, transmission electron microscopy (TEM), x-ray diffraction, field ion microscopy, atom probe tomography (APT), and small-angle neutron scattering (SANS) are presented. These experimental techniques were used to characterize as-prepared samples and specimens heat treated at different temperatures around the glass transition temperature. APT and SANS show that the alloy decomposes into copper-enriched and titanium-enriched regions prior to nucleation and growth of a crystalline phase. TEM shows that the primary nucleating phase has a face centered cubic structure.
Additional Information
Copyright © 2001 American Institute of Physics. Received 21 August 2000; accepted 17 October 2000. The authors thank C. M. Garland for assistance with the TEM work and K. F. Russell for assistance with the FIM/APT experiments. The SANS measurements were performed with P. Thiyagarajan at Argonne National Laboratory. This work was supported by the U.S. Department of Energy (Grant No. DEFG-03-86ER45242), NASA (Grant No. NAG8-1744) (W.J.) and the Alexander von Humboldt Foundation via the Feodor Lynen Program (J.L.). Research at the Oak Ridge National Laboratory SHaRE User Facility was sponsored by the Division of Materials Sciences and Engineering, U.S. Department of Energy, under Contract No. DEAC05-00OR22725 with UT-Battelle, LLC, and through the SHaRE Program under Contract No. DE-AC05-76OR00033 with Oak Ridge Associated Universities.Files
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