Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500724 | Scripta Materialia | 2010 | 4 Pages |
Abstract
Positron annihilation spectroscopy was performed in order to study the influence of preparation route and processing on atomic free volumes in amorphous and nanocrystalline aluminium alloys. In melt-spun amorphous Al88Y7Fe5, structural free volumes smaller than a lattice vacancy are predominant, whereas in amorphous Al92Sm8 prepared by repeated cold rolling larger free volumes occur. In the early stages of nanocrystallization of Al88Y7Fe5, an indication of Y enrichment at interfacial free volumes in the growth front of the Al nanocrystallites is found.
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Wolfgang Lechner, Werner Puff, Gerhard Wilde, Roland Würschum,