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Amorphous/nanocrystalline composites analysed by the Rietveld method

Baricco, Marcello and Enzo, Stefano and Baser, Tanya Aycan and Satta, Marta and Vaughan, Gavin and Yavari, Alain Reza (2010) Amorphous/nanocrystalline composites analysed by the Rietveld method. Journal of Alloys and Compounds, Vol. 495 (2), p. 377-381. eISSN 1873-4669. Article.

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DOI: 10.1016/j.jallcom.2009.11.024

Abstract

The Rietveld refinement approach has been applied to semi-crystalline materials in the case of bulk metallic glasses. Specifically, the crystallisation behaviour of a Fe48Cr15Mo14Y2C15B6 bulk metallic glass has been investigated by in situ X-ray diffraction obtained using a high intensity monochromatic synchrotron beam at the ID11 line of ESRF in Grenoble, France. From the Rietveld analysis of diffraction patterns, adapted to include a paracrystal model for describing the amorphous metal component, volume fraction of evolving phases, structure and microstructure parameters of nucleated phases have been followed as a function of run number, which turns out to be related to the applied temperature. Capabilities and limitations of the approach are discussed in terms of structural information.

Item Type:Article
ID Code:5707
Status:Published
Refereed:Yes
Uncontrolled Keywords:Amorphous materials, rapid-solidification, quenching, crystal structure, X-ray diffraction
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:Elsevier
eISSN:1873-4669
Copyright Holders:© 2009 Elsevier B.V.
Additional Information:15th International symposium on metastable, amorphous and nanostructured materials, 6-10 July 2008, Buenos Aires, Argentina
Deposited On:03 Mar 2011 12:28

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