Crystallization behavior of amorphous alloys in the Al-Ce-Ni system

C. Triveño Rios, S. Suriñach, M. D. Baró, C. Bolfarini, Walter Jose Botta F., C. S. Kiminami

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

Abstract

This work involved an investigation of the crystallization process of Al90Ce5Ni5 amorphous alloy Rapidly quenched amorphous ribbon was produced by melt-spinning and the structural transformations occurring during heating were studied using a combination of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Crystallization took place through a multistage process. The first stage of transformation corresponded to the crystallization of the fcc-Al phase, while the second and third exothermic transformations involved the crystallization of Al3Ni, Al11, Ce3, Al3 Ce, AlCeNi and unidentified phases. The transformation curves recorded under isothermal treatments at 150*C and 305*C indicated that crystallization occurred through nucleation and growth, with diffusion-controlled growth occurring in the first crystallization stage and interface-controlled growth in the third. The Avrami exponents suggested only crystallization of fcc-Al phase, and simultaneous crystallization of intermetallic compounds and unidentified phases with two- and three-dimensional crystallization. © 2008 Advanced Study Center Co. Ltd.
Original languageEnglish
Pages (from-to)469-475
JournalReviews on Advanced Materials Science
Volume18
Issue number5
Publication statusPublished - 1 Oct 2008

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