Selection of new glass-forming compositions in Al-La system using a combination of topological instability and thermodynamic criteria

dc.creatorGARGARELLA, P.
dc.creatorKIMINAMI, C. S.
dc.creatorOLIVEIRA, Marcelo Falcão de
dc.creatorBOLFARINI, C.
dc.creatorBOTTA, W. J.
dc.date.accessioned2012-10-18T23:53:27Z
dc.date.accessioned2018-07-04T14:47:11Z
dc.date.available2012-10-18T23:53:27Z
dc.date.available2018-07-04T14:47:11Z
dc.date.created2012-10-18T23:53:27Z
dc.date.issued2009
dc.identifierMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.512, n.1/Fev, p.53-57, 2009
dc.identifier0921-5093
dc.identifierhttp://producao.usp.br/handle/BDPI/17627
dc.identifier10.1016/j.msea.2009.01.026
dc.identifierhttp://dx.doi.org/10.1016/j.msea.2009.01.026
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1614427
dc.description.abstractA combination of an extension of the topological instability ""lambda criterion"" and a thermodynamic criterion were applied to the Al-La system, indicating the best range of compositions for glass formation. Alloy compositions in this range were prepared by melt-spinning and casting in an arc-melting furnace with a wedge-section copper mold. The GFA of these samples was evaluated by X-ray diffraction, differential scanning calorimetry and scanning electron microscopy. The results indicated that the gamma* parameter of compositions with high GFA is higher, corresponding to a range in which the lambda parameter is greater than 0.1, which are compositions far from Al solid solution. A new alloy was identified with the best GFA reported so far for this system, showing a maximum thickness of 286 mu m in a wedge-section copper mold. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherELSEVIER SCIENCE SA
dc.relationMaterials Science and Engineering A-structural Materials Properties Microstructure and Processing
dc.rightsCopyright ELSEVIER SCIENCE SA
dc.rightsrestrictedAccess
dc.subjectAl-La system
dc.subjectSelection of amorphous alloys
dc.subjectTopological stability criterion
dc.subjectThermodynamic criterion
dc.titleSelection of new glass-forming compositions in Al-La system using a combination of topological instability and thermodynamic criteria
dc.typeArtículos de revistas


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