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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/427

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
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