Abstract
Crystallization has been studied in the amorphous Cu-Ag-La alloys by means of X-ray diffraction, differential scanning calorimeter and transmission electron microscopy. Amorphous Cu52Ag45La3 alloy was found to crystallize two distinct stages; first and second stages are due to primary crystallization of nanocrystalline fcc-Cu and fcc-Ag phases and growth of primary crystalline. The crystallization process is the typical nucleation and growth transformation. The n-values of JMA plot are in the range of 2.5 and 3, indicating a diffusion controlled growth in the eutectiod cells. Mechanical properties; σf and Hv, are clearly improved by the partial crystallization of amorphous phase.
Original language | English |
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Pages (from-to) | 179-183 |
Number of pages | 5 |
Journal | Science Reports of the Rerearch Institutes Tohoku University Series A-Physics |
Volume | 42 |
Issue number | 1 |
Publication status | Published - 1996 Mar |
Externally published | Yes |
Keywords
- Amorphous alloy
- Copper-silver-lanthanum system
- Insoluble type alloy
- Partial crystallization
- Two phases nanocrystalline
ASJC Scopus subject areas
- Condensed Matter Physics
- Metals and Alloys