Texture transition in Al�Mg alloys: effect of magnesium

Kalsar, R and Madhavan, R and Ray, RK and Suwas, S (2020) Texture transition in Al�Mg alloys: effect of magnesium. In: Philosophical Magazine, 100 (16). pp. 2143-2164.

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Abstract

The evolution of deformation texture and microstructure in commercially pure Al (cp-Al) and two Al�Mg alloys (Al�4Mg and Al�6Mg) during cold rolling to a very large strain (true strain εt� 3.9) was investigated. The development of deformation texture in cp-Al, after rolling, can be considered as pure metal or Copper-type, which is characterised mainly by the presence of Cu 112<111>, Bs 110<112> and S 123<634> components. The deformation microstructure clearly indicates that deformation mechanism in this case remains slip dominated throughout the deformation range. In the Al�4Mg alloy, the initial slip mode of deformation is finally taken over by mechanism involving both slip and Copper-type shear bands, at higher deformation levels. In contrast, in the Al�6Mg alloy, the slip and twin mode of deformation in the initial stage is replaced by slip and Brass-type shear bands at higher deformation levels. Although a Copper-type deformation texture forms in the two Al�Mg alloys at the initial stage of deformation, there is a significant increase in the intensity of the Bs component and a noticeable decrease in the intensity of the Cu component at higher levels of deformation, particularly in the Al�6Mg alloy. This phenomenon indicates the possibility of transition of the deformation texture from Cu-type to Bs-type, which is concurrent with the addition of Mg. Using visco-plastic self-consistent modelling, the evolution of deformation texture could be simulated for all three materials. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.

Item Type:	Journal Article
Publication:	Philosophical Magazine
Publisher:	Taylor and Francis Ltd.
Additional Information:	Copy right for this article belongs to Taylor and Francis Ltd.
Keywords:	Cold rolling; Copper; Deformation; Shear bands; Textures, Commercially pure Al; Deformation mechanism; Deformation microstructure; Deformation texture; Mode of deformation; Texture transition; To a very large; Visco-plastic self-consistent, Magnesium alloys
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	23 Nov 2020 09:23
Last Modified:	23 Nov 2020 09:23
URI:	http://eprints.iisc.ac.in/id/eprint/65763

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