AZ91C magnesium alloy modified by Cd

Shabadi, R and Ambat, R and Dwarakadasa, ES (2014) AZ91C magnesium alloy modified by Cd. In: MATERIALS & DESIGN, 53 . pp. 445-451.

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Abstract

In the present work, the effect of Cd on the microstructure, mechanical properties and general corrosion behaviour of AZ91C alloys was investigated. Addition of Cd was found not to be efficient in modifying/refining the microstructure or beta-phase. A morphology change in beta-phase from fine continuous precipitates to discontinuous beta-phase upon the addition of Cd was observed. A marginal increment in mechanical properties was observed. General corrosion behaviour was followed with weight loss measurements, potentiostatic polarisation studies and surface studies in 3.5% sodium chloride solution and 3.5% sodium chloride with 2% potassium dichromate solution. Cd addition deteriorated the corrosion behaviour of AZ91C. This behaviour was attributed to the formation of chunks of beta-phase upon the addition of Cd. AZ91C with refined beta-phase distribution, performed rather better in the NaCl solutions. (C) 2013 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	MATERIALS & DESIGN
Publisher:	ELSEVIER SCI LTD
Additional Information:	copyright for this article belongs to ELSEVIER SCI LTD,ENGLAND
Keywords:	Trace element addition; Magnesium alloys; Alloy design; Mechanical properties
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	17 Dec 2013 10:07
Last Modified:	17 Dec 2013 10:07
URI:	http://eprints.iisc.ac.in/id/eprint/47931

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