Nanostructured Al<inf>8</inf>8Ni<inf>4</inf>SM<inf>8</inf> alloys investigated by transmission electron and field-ion microscopies

T. Gloriant, D. H. Ping, K. Hono, A. L. Greer, M. D. Baró

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44 Citations (Scopus)

Abstract

This paper presents results on the formation of α-Al nanocrystals in Al88Ni4Sm8 amorphous alloy produced by melt spinning. The crystallisation behaviour was examined by means of transmission electron microscopy (TEM, HREM) and atom-probe field-ion microscopy (APFIM). For various annealing treatments, the nanoparticles grow with a dendritic-like shape, reaching a maximum average size of 30-35 nm. This rapid growth is shown to be due to a low density of nuclei at the beginning of the nanocrystallisation process and the diffusion-field impingement which limits the nanocrystal growth is supposed to occur much later in this case. © 2001 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)315-320
JournalMaterials Science and Engineering A
Volume304-306
Issue number1-2
DOIs
Publication statusPublished - 31 May 2001

Keywords

  • Amorphous
  • Atom-probe field-ion microscopy
  • Devitrivication
  • Nanocrystal growth

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