Abstract
An elemental powder mixture with a nominal composition of Al65Cu20Fe15 was mechanically milled for times of up to 8 h. Subsequent annealing of as-milled powders was performed at different temperatures between 600 and 800degreesC for 4 h. A combination of X-ray diffractrometry, differential scanning calorimetry and transmission and scanning electron microscopy has been used to characterise the microstructure of as-milled powders before and after annealing. The icosahedral quasicrystalline (QC)-phase did not form directly after milling. QC-phase was obtained from the un-milled powder by annealing above 700degreesC for 4 It. However, a combination of milling and subsequent annealing could enhance the formation of QC at temperatures above 600degreesC. (C) 2004 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 128-133 |
Number of pages | 6 |
Journal | Journal of Alloys and Compounds |
Volume | 387 |
DOIs | |
Publication status | Published - 25 Jan 2005 |
Keywords
- thermal analysis
- scanning and transmission electron microscopy
- quasicrystals
- X-ray diffraction
- mechanical alloying