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Asymmetric Rolling of TZ73 Magnesium Alloy to Improve Its Ductility

Verma, KK and Suwas, S and Kumar, S (2020) Asymmetric Rolling of TZ73 Magnesium Alloy to Improve Its Ductility. In: Magnesium Technology Symposium held at the 149th Annual Meeting and Exhibition, 23 February 2020 through 27 February 2020, San Diego; United States, pp. 189-196.

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Official URL: https://dx.doi.org/10.1007/978-3-030-36647-6_30

Abstract

Asymmetric rolling, i.e., upper and lower rolls having different circumferential speeds, is a novel technique to improve the ductility of Mg alloys. A newly developed TZ73 Mg alloy was squeeze cast, homogenized at 300 °C for 24 h, rolled at 350 °C by symmetric and asymmetric rolling, and annealed at 215 °C for 30 min. The microstructure was characterized by X-ray diffraction, scanning electron microscope equipped with energy-dispersive X-ray spectroscopy and electron backscattered diffraction. A weakening of basal texture with a concomitant increase in ductility was observed for asymmetrically rolled sheet while retaining the same strength as in symmetrically rolled sheet. Thus, tensile properties of 0.2 PS = 290 MPa, UTS = 332 MPa and El = 13 in hot rolled, and 0.2 PS = 182 MPa, UTS = 282 MPa and El = 21 in annealed condition were obtained for asymmetrically rolled sheet, which are extremely good for a rolled Mg alloy sheet. © 2020, The Minerals, Metals & Materials Society.

Item Type: Conference Paper
Publication: Minerals, Metals and Materials Series
Publisher: Springer
Additional Information: cited By 0; Conference of Magnesium Technology Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020 ; Conference Date: 23 February 2020 Through 27 February 2020; Conference Code:238079
Keywords: Ductility; Energy dispersive spectroscopy; Hot rolling; Microstructure; Scanning electron microscopy; Squeeze casting; Tensile properties; Textures, Asymmetric rolling; Circumferential speed; Crystallographic textures; Electron back-scattered diffraction; Energy dispersive X ray spectroscopy; Mg alloy; Mg alloy sheets; Novel techniques, Magnesium alloys
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 31 Aug 2020 12:06
Last Modified: 31 Aug 2020 12:06
URI: http://eprints.iisc.ac.in/id/eprint/64986

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