Texture-induced surface roping in an automotive aluminium sheet

Bennett, Tricia A.; Petrov, Roumen; Kestens, Léo

doi:10.1016/j.scriptamat.2009.06.016

Cited by 33 publications

(10 citation statements)

References 11 publications

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“…High roping aluminum samples were always observed [6][7][8][9][10][11][12] with alignments of clustered crystallographic components such as Cube {100}h001i and Goss {110}h001i. From crystal plasticity modeling, e.g., References 13 and 14, Cube and Goss are known to exhibit different mechanical behaviors that can explain, in a given layer, the anisotropic development of roping.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Surface Roping with Through-Thickness Microtextures in an AA6xxx Sheet

Guillotin

Guiglionda²,

Maurice

et al. 2011

Metall Mater Trans A

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Strain-induced surface roughness was quantitatively correlated with microtexture spatial distributions from the surface to the midthickness of a strongly roping AA6016 sheet. The microtexture variations through the sheet were measured by acquiring a series of large area electron backscatter diffraction (EBSD) scans at intervals of about the grain size. The orientations of the different layers were translated into out-of-plane strains using a crystal plasticity model for comparison with the surface roping. The spatial distributions (particularly the characteristic wavelengths) of the microtexture layers were determined by areal auto-correlation functions, and quantitatively compared to the surface appearance by correlation coefficients. The results show that texture banding of Cube/Goss components along the rolling direction is present from the surface to midthickness but with significant variations from one grain layer to another. The wavelength correlation coefficient exhibits a maximum at about 55 lm, or 2 grain thicknesses, below the surface. It is shown that the spatial distribution of Cube/Goss components of the first three or four surface grain layers plays an important role in strong roping of AA6016 sheets.

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Section: Introductionmentioning

confidence: 99%

Correlation of Surface Roping with Through-Thickness Microtextures in an AA6xxx Sheet

Guillotin

Guiglionda²,

Maurice

et al. 2011

Metall Mater Trans A

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“…160 Cube grains are emphasized since it was shown previously that of all orientations considered, they display the highest banding character [8]. It is clear from Figs 4(a) and (b) that the number of Cube grains in the CR_A and IA_1 materials is not very high.…”

Section: Figmentioning

confidence: 79%

Surface Texture Modification for Improved Roping Behaviour of Aluminium Alloy 6016

Bennett

Petrov

Kestens

2010

SSP

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Abstract. The effect of two different intermediate annealing (IA) treatments on texture banding in a roping prone aluminium alloy was investigated. It was found that texture banding occurred in the final annealed material that underwent an IA treatment consisting of slow heating in which there was significant interaction between the recrystallizing grains and the particles in the material. A more uniform distribution of orientations in the final annealed material was obtained in the case of an IA treatment with fast heating so that there was no significant effect of particles on recrystallization. IntroductionIt is well established that the 6XXX series aluminium alloys, which are used in automotive applications are prone to roping [1][2][3][4]. Various publications have shown that there is a correlation between the occurrence of roping and the spatial distribution of specific crystallographic orientations [1][2][3][4]. In addition, it appears that the roping tendency of a material is connected with the precipitation state [5]. This is possible since the precipitation state can influence the recrystallization texture of the material. For example, Engler and Hirsch [6] investigated the recrystallization texture and plastic anisotropy in Al-Mg-Si sheet alloys [6], and reported different intensities of the {100}<001> Cube component in the final recrystallised textures in materials which had different dispersoid (particles dispersed in the material) densities. The Cube intensity was higher in the material that had a significant density of dispersoids compared to the case with a considerably lower fraction (of dispersoids) [6]. It was assumed that particle stimulated nucleation (PSN) was retarded by the dispersoids but Cube grains were still able to successfully nucleate at Cube bands [6]. Since particles can affect the final recrystallization texture formed in a material, it is conceivable that they can have some effect on the spatial distribution of crystallographic grains in these materials. As such, this paper explores the connection between particles and the eventual spatial distribution of Cube grains in a 6016 Al alloy.

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“…If the crystallographic orientations have some preferred orientation but were not random, then the sample has different textures, namely, weak, moderate and strong. The crystal having the preferred orientation and its degree was dependent on the percentage [6]. Texture can have a great influence on the material properties and is seen in almost all engineered materials.…”

Section: Crystallographic Texturementioning

confidence: 99%

“…Knorr et al [17] and Kocks et al [18] studied the material property such as strength and deformation behaviour, through texture and failure analysis. Bennett et al [6] examined the cube (1 0 0)<001> grains before and after stretching and found that there was a translocation. In this aspect this work investigates the mode of evolution of texture components, in commercially available aluminium alloy sheets of three different thicknesses at three different annealing temperatures using numerical modelling practice.…”

Section: Texture Propertiesmentioning

confidence: 99%

Aluminium and Its Interlinking Properties

Velmanirajan¹,

Anuradha²

2020

Aluminium Alloys and Composites

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Aluminium and its alloys are preferred materials, because of its varied desirable properties, availability and inexpensiveness. Aluminium alloys exist in several different grades available in the market commercially, from pure (about 99% Al content) to specific varieties based on the impurities contained in it by chemical composition. The properties are differing in nature which can be scientifically seen and justified in different perspectives. The properties such as forming, fracture mode, tensile, etc. can be seen through the metallurgical aspect, chemical aspect, crystallographic texture, forming limits and mechanical properties. The truth of its properties can be viewed by interlinking/correlating nature of its different studies. The purpose of this chapter is to show the correlating nature of different properties of aluminium of same and different grades.

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Texture-induced surface roping in an automotive aluminium sheet

Cited by 33 publications

References 11 publications

Correlation of Surface Roping with Through-Thickness Microtextures in an AA6xxx Sheet

Correlation of Surface Roping with Through-Thickness Microtextures in an AA6xxx Sheet

Surface Texture Modification for Improved Roping Behaviour of Aluminium Alloy 6016

Aluminium and Its Interlinking Properties

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