Abstract
The 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.
Original language | English |
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Pages (from-to) | 1067-1077 |
Journal | Acta Materialia |
Volume | 51 |
DOIs | |
Publication status | Published - 25 Feb 2003 |
Keywords
- Aluminium
- Crystallization
- Embrittlement
- Hardening
- Metallic glass