Texture development during cross rolling of a dual-phase Fe–Cr–Ni alloy: experiments and simulations

Kumar, A and Gupta, A and Khatirkar, RK and Suwas, S (2018) Texture development during cross rolling of a dual-phase Fe–Cr–Ni alloy: experiments and simulations. In: Philosophical Magazine Letters, 98 (1). pp. 17-26.

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Abstract

Texture development during multi-step cross rolling of a dual-phase Fe–Cr–Ni alloy has been investigated. X-ray diffraction was used to investigate changes in crystallographic texture of both the constituent phases (austenite and ferrite) through changes in orientation distribution function. After deformation, rotated brass (rotated along φ1, i.e. the sample normal direction ND), along with a weak cube texture was observed in austenite, while a strong rotated cube texture was obtained in ferrite. Texture was also simulated for various strains using a co-deformation model by self-consistent visco-plastic (VPSC) formulation. Simulations showed strong rotated brass texture in austenite and a strongly rotated cube, α-fibre (sample rolling direction RD //[removed]) and γ-fibre (ND //[removed]) in ferrite after highest strain (εt = 1.6). VPSC models could not effectively capture the change in crystallographic texture during cross rolling. In ferrite, simulations showed an overestimation of γ-fibre component and an underestimation of rotated cube component. Simulated texture of austenite, on the other hand, showed an overestimation of rotated brass with an absence of cube component. The results are rationalised based on the possible role of shear banding and activation of non-octahedral slip system during cross rolling, both of which are not incorporated in conventional VPSC models.

Item Type:	Journal Article
Publication:	Philosophical Magazine Letters
Publisher:	Taylor and Francis Ltd.
Additional Information:	The copyright for this article belongs to the Informa UK Limited, trading as Taylor & Francis Group.
Keywords:	Austenite; Brass; Deformation; Distribution functions; Ferrite; Geometry; Metal forming machines; Nickel alloys; Rotation; Strain; X ray diffraction, Brass textures; Cross rolling; Cube texture; Ni alloys; VPSC, Rolling
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	14 Aug 2022 05:35
Last Modified:	14 Aug 2022 05:35
URI:	https://eprints.iisc.ac.in/id/eprint/75694

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