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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13060
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.
Published in: Materials Science and Engineering A
Abstract: Amorphous and nanocrystalline phases generated in an elemental blend of Al 94.5 Cr 3 Co 1.5 Ce 1 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 [A. Inoue, Nanostruct. Mater. 6 (1995) 53-64]. In contrast, MA of Al 94.5 Cr 3 Co 1.5 Ce 1 composition carried out in the present study shows the formation of Al-based solid solutions along with partial 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 have been discussed. The thermal stability of the mechanically alloyed product has also been investigated by a differential scanning calorimeter (DSC) and XRD. © 2007.
Citation: Materials Science and Engineering A (2008), 472(43832): 208-213
URI: https://doi.org/10.1016/j.msea.2007.03.048
http://repository.iitr.ac.in/handle/123456789/13060
Issue Date: 2008
Keywords: Amorphisation
Mechanical alloying
Nanocrystalline
Thermal stability
Transmission electron microscopy
X-ray diffraction
ISSN: 9215093
Author Scopus IDs: 12783902100
35513324800
7003438029
Author Affiliations: Mula, S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur, 721302, India
Ghosh, S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur, 721302, India
Pabi, S.K., Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur, 721302, India
Funding Details: The work was sponsored by the Department of Science and Technology, Govt. of India through grant no. SR/S5/NM-91/2002 and the Defense Research and Development Organization, Govt. of India through grant no. ERIP/ER/0100169/M/01.
Corresponding Author: Pabi, S.K.; Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur, 721302, India; email: skpabi@metal.iitkgp.ernet.in
Appears in Collections:Journal Publications [MT]

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