Artículo
Short range order in Al-Fe-Nb, Al-Fe-Ce and Al-Ni-Ce metallic glasses
Fecha de publicación:
04/2010
Editorial:
Elsevier Science Sa
Revista:
Journal of Alloys and Compounds
ISSN:
0925-8388
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Short range order of amorphous samples with Al90Fe7Nb3, Al90Fe5Ce5 and Al90Ni5Ce5 nominal composition (in at.%) was studied by X-ray diffraction (XRD) at room temperature (RT). The total structure factors STot(Q) and the reduced atomic distribution function G(r) were derived from the diffracted intensity IM(Q). All the STot(Q) factors are composed by an initial prepeak followed by a main peak and a second peak with two components. Though the general aspect of the different samples is similar they present slight differences in details that are discussed as a function of the composition and compared with available data in the literature. While in the Al-(Fe, Ni)-Ce alloys two distinct components were observed for the first peak of the G(r) function, a unique broad peak was observed in the Nb containing alloy. The pair correlation function, g(r), for Al90Fe10 at 200 K have been calculated with molecular dynamics simulation (MDS) and it is in good agreement with the experimental results obtained from Al90Fe7Nb3 showing that size effects can be neglected in this sample.
Palabras clave:
Amorphous
,
Local Order
,
Structure
,
X-Ray Diffraction
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Identificadores
Colecciones
Articulos(INTECIN)
Articulos de INST.D/TEC.Y CS.DE LA ING."HILARIO FERNANDEZ LONG"
Articulos de INST.D/TEC.Y CS.DE LA ING."HILARIO FERNANDEZ LONG"
Citación
Saporiti, María Fabiana Sonia; Boudard, Miguel Santiago; Audebert, Fernando Enrique; Short range order in Al-Fe-Nb, Al-Fe-Ce and Al-Ni-Ce metallic glasses; Elsevier Science Sa; Journal of Alloys and Compounds; 495; 2; 4-2010; 309-312
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