Metastable phase formation during mechanical alloying of Al-Ge and Al-Si alloys

Chattopadhyay, K and Wang, XM and Aoki, K and Masumoto, T (1996) Metastable phase formation during mechanical alloying of Al-Ge and Al-Si alloys. In: Journal of Alloys and Compounds, 232 (1-2). pp. 224-231.

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Abstract

In this paper we report the mechanical alloying behaviour of elemental aluminium with diamond cubic elements Ge and Si. A metastable crystalline phase with rhombohedral crystal structure forms in Al-70 Ge-30 and Al-60 Ge-40 alloy compositions. The phase always coexists with elemental constituents and decomposes over a broad temperature range. No such metastable phase could be observed in the Al-Si system. We also report X-ray diffractometry and differential scanning calorimetry results suggestive of amorphization. Finally a comparison was made of the present result with that obtained in rapid solidification.

Item Type:	Journal Article
Publication:	Journal of Alloys and Compounds
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Keywords:	Mechanical alloying;Metastable phase;Aluminium-germanium; Aluminium-silicon;Phase formation
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	03 May 2011 06:41
Last Modified:	03 May 2011 06:41
URI:	http://eprints.iisc.ac.in/id/eprint/37361

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