Structural and magnetic investigations on the metastable phases of the mechanically alloyed Fe-Cu system

Majumdar, B and Raja, Manivel M and Narayanasamy, A and Chattopadhyay, K (1997) Structural and magnetic investigations on the metastable phases of the mechanically alloyed Fe-Cu system. In: Journal of Alloys and Compounds, 248 (1-2). pp. 192-200.

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Abstract

Attempts have been made to produce a solid so!udon of $Fe_{100-x}Cu_x(x = 10 \hspace{2mm} to \hspace{2mm} 50)$ by the mechanical alloying technique at rooom temperature. A combination of X-ray diffractometry, electron microscopy, Mossbauer spectroscopy and magnetisation measurements has been used to characterise the alloys. Our results indicate that formation of the b.c.c. Fe-G solid solution is difficult up to a copper concentration of 20%. For higher copper concentrations, Fe-Cu solid solutions are obtained. The magnetisation and Mossbauer data confirm that excess milling leads to the precipitation of b.c.c. Fe from the f.c.c. solid solution. The Mossbauer studies also show the coexistence of a small amount of $\gamma-Fe$ for all compositions.

Item Type:	Journal Article
Publication:	Journal of Alloys and Compounds
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Iron;Copper.Fe-G system;Mechanical alloying;Structure;Magnetization
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	23 May 2007
Last Modified:	19 Sep 2010 04:36
URI:	http://eprints.iisc.ac.in/id/eprint/10212

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