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Crystallization of a Al-4Ni-6Ce glass and its influence on mechanical properties

AuthorsMuñoz-Morris, Mª Antonia; Suriñach, S.; Gich, Martí ; Barò, M. D.; Morris, David G.
Issue Date2003
CitationActa Materialia 51: 1067-1077 (2003)
AbstractThe crystallization behaviour of a rapidly quenched, amorphous Al-4Ni-6Ce material has been examined during low temperature annealing, and shown to commence by the nucleation of nanoscale Al crystals, which stop growing once they reach a size of about 10 nm. In a subsequent, second phase of crystallization the dendritic Al crystals grow rapidly with the formation of a crystal-glass eutectic-like mixture. The nanoscale Al crystals lead to some hardening of the glass, but do not modify the good ductility of the material. Subsequent hardening and embrittlement of the glass-nanocrystal composite may depend on slight changes of the extent of crystallization or instead on changes occurring in the glass itself. © 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
Identifiersdoi: 10.1016/S1359-6454(02)00511-6
issn: 1359-6454
Appears in Collections:(CENIM) Artículos
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