Evolution of Microstructure, Texture, and Tensile Properties in Two-Phase Mg-Li Alloys: Effect of Zn Addition

Perugu, CS and Kumar, S and Suwas, S (2020) Evolution of Microstructure, Texture, and Tensile Properties in Two-Phase Mg-Li Alloys: Effect of Zn Addition. In: JOM, 72 (4). pp. 1627-1637.

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Abstract

The effect of ternary zinc (Zn) addition to two-phase magnesium-lithium alloys on the evolution of their microstructure, texture and tensile properties has been investigated. It was observed that the volume fraction of hexagonal close-packed α phase increased with increase in the Zn content. The size of α lamellae reduced with increase in the Zn content. The strength of the alloys in as-cast condition increased with the Zn content due to solid-solution strengthening without compromising the ductility. The tensile properties of these two-phase alloys were found to be strongly dependent on the volume fraction and size of the α phase. Zn addition led to enhancement of the 200 || normal direction (ND) component but weakening of 110 || ND components in the β phase, while increase in the Zn content had a minor effect on the texture of the α phase in cold-rolled condition. The specific strength of the alloy with 2 wt. Zn was found to be comparable to, while the ductility was higher than, the highest-strength 7075-T73 Al alloy.

Item Type:	Journal Article
Publication:	JOM
Publisher:	Springer
Additional Information:	copyright for this article belongs to Springer
Keywords:	Aluminum alloys; Binary alloys; Cold rolling; Ductility; Magnesium alloys; Metal cladding; Microstructural evolution; Textures; Volume fraction, Alpha lamellae; Hexagonal close packed; Magnesium-lithium alloys; Mg-Li alloy; Normal direction; Solid solution strengthening; Specific strength; Two-phase alloys, Lithium alloys
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	02 Jul 2020 09:19
Last Modified:	02 Jul 2020 09:19
URI:	http://eprints.iisc.ac.in/id/eprint/64712

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