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Effect of aluminium on microstructure, mechanical property and texture evolution of dual phase Mg-8Li alloy in different processing conditions

Pugazhendhi, Bhagat Singh and Kar, Amlan and Sinnaeruvadi, Kumaran and Suwas, Satyam (2018) Effect of aluminium on microstructure, mechanical property and texture evolution of dual phase Mg-8Li alloy in different processing conditions. In: ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, 18 (4). pp. 1332-1344.

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Official URL: http://dx.doi.org/10.1016/j.acme.2018.04.001

Abstract

The present study investigates the possibility of enhancing the strength with ductility of dual-phase magnesium (Mg)-8 lithium (Li) alloy by the combination of alloying addition aluminium (Al) and suitable thermo-mechanical processing. Microstructural evolution, phase analysis and texture studies were performed for Mg-8Li-xAl (x = 0, 2,4 and 6) alloys with the help of scanning electron microscopy (SEM) and X-ray diffraction (XRD). It is understood from the texture studies that the addition of Al to the Mg-8Li alloys activates the non-basal slip at room temperature. In turn, it facilitates the recovery process, hence a substantial improvement in plastic deformation after annealing of the alloys is observed. This is attributed to non-basal slip activity at room temperature. The presence of fine intermetallic compounds in the annealed Mg-8Li-xAl (x = 4 and 6) alloys leads to the higher ultimate strength (193 +/- 7 MPa and 267 +/- 9 MPa) and ductility (20% and 17%), respectively. (c) 2018 Politechnika Wroclawska. Published by Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belong to ELSEVIER URBAN & PARTNER SP Z O O
Keywords: Mg-Li alloy; Non-basal slip; Extrusion; Texture and mechanical properties
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 25 Oct 2018 14:31
Last Modified: 25 Oct 2018 14:31
URI: http://eprints.iisc.ac.in/id/eprint/60955

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