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| Title: | Synthesis of an Al-based Al-Cr-Co-Ce alloy by mechanical alloying and its thermal stability |
| Authors: | Mula, S
Ghosh, S
Pabi, S K |
| Issue Date: | 2007 |
| Publisher: | Elsevier |
| Citation: | Material Science and Engineering A (Accepted Post-print) |
| Abstract: | Amorphous and nanocrystalline phases generated in an elemental blend of
Al94.5Cr3Co1.5Ce1 composition (at.%) in the course of mechanical alloying (MA)
have been investigated by X-ray diffraction (XRD), transmission electron
microscopy (TEM), scanning electron microscopy (SEM) and differential
scanning calorimeter (DSC). It has been reported that rapid solidification
processing (RSP) of the same composition generates a finely mixed unique
structure consisting of nanoscale icosahedral (I) particles surrounded by a thin
Al phase [1]. In contrast, MA of Al94.5Cr3Co1.5Ce1 composition carried out in the
present study shows the formation of Al-based solid solutions along with partial
1
amorphisation. It emerges that during MA a wide difference in the atomic size
of the alloying elements in solid solution plays a pivotal role in the amorphous
phase formation. The possible causes of the difference in microstructure
generated by MA and RSP hav... |
| Description: | Copyright for this article belongs to Elsevier. This is author version postprint |
| URI: | http://hdl.handle.net/2080/427 |
| Appears in Collections: | Journal Articles
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