Texture evolution in an Al–Cu alloy during equal channel angular pressing: the effect of starting microstructure

Venkatachalam, Perumal; Roy, Shibayan; Ravisankar, B.; Paul, V. Thomas; Vijayalakshmi, M.; Suwas, Satyam

doi:10.1007/s10853-011-5598-1

Cited by 13 publications

(8 citation statements)

References 33 publications

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“…Presence of MgZn 2 precipitates can lead to the higher texture strength of the material in the annealed condition. In contrast, the weak texture strength could be formed due to strain scattering from extensive fragmentation of precipitates after the second pass by the ECAP process and leading to strain relaxation across the deformation zone corroborated by the Venkatachalam et al [59]. Figure 14a-c displayed the fracture surfaces after tensile test for annealed and first, second pass ECAPed specimens.…”

Section: Crystallographic Texture Evolutionmentioning

confidence: 56%

Development of ultrafine grained Al–Zn–Mg–Cu alloy by equal channel angular pressing: microstructure, texture and mechanical properties

Ghosh

Gudimetla

et al. 2020

Archiv.Civ.Mech.Eng

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In this article, an effort has been made to investigate the evolution of microstructure, texture and mechanical properties of AA 7075 alloy during equal channel angular pressing (ECAP) by route B C at room temperature at a pressing speed of 1 mm/ min. Transmission electron microscopy (TEM) revealed the presence of rod-like (MgZn 2 ) precipitates in annealed conditions which were broken after two ECAP passes along with remarkable grain refinement due to high imposed strain after the second pass. After two consecutive ECAP passes, hardness, yield strength, and tensile strength of the alloy increased significantly in comparison to initial annealed condition. The fraction of high angle boundaries (HABs) and grain misorientation angle significantly increased after ECAP passes compared to the initial condition. Texture measurements were performed by X-ray diffractometer (XRD), on TD plane (parallel to extrusion direction). Texture results revealed the dominance of C and A * 2 components after the first pass and the presence of strong B , B and Ā components along with weaker A * 2 , C components after the second pass. Scanning electron microscopy (SEM) revealed that the average dimple size was gradually reduced with increasing the ECAP passes.

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Section: Crystallographic Texture Evolutionmentioning

confidence: 56%

Development of ultrafine grained Al–Zn–Mg–Cu alloy by equal channel angular pressing: microstructure, texture and mechanical properties

Ghosh

Gudimetla

et al. 2020

Archiv.Civ.Mech.Eng

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“…8b). Both the grain size and misorientation distribution confirm the formation of an ultra-fine grain structure after 8 passes of ARB [35,37]. Table 3 lists the typical texture components and the corresponding Euler angles that form during the deformation (e.g.…”

Section: Microstructural Evolution During Arbmentioning

confidence: 77%

“…The weighted average and the corresponding error value were calculated from the cumulative distribution of the intercept lengths. A proportionality constant of 1.56 was used to convert the average linear intercept lengths into the corresponding spatial grain sizes according to the ASTM standard E112-96 [35]. …”

Section: Arb Processingmentioning

confidence: 99%

Microstructure and texture evolution during accumulative roll bonding of aluminium alloys AA2219/AA5086 composite laminates

et al. 2012

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Accumulative roll bonding of two aluminium alloys, AA2219 and AA5086 was carried out up to 8 passes. During the course of ARB, the deformation inhomogeneity between the two alloy layers results in interfacial instability after the 4th pass, necking of the AA5086 layers after the 6th pass and fracture along the necked regions after the 7th and 8th pass. The EBSD analysis shows deformation bands along the interfaces after 8 passes of ARB. The ARBprocessed materials predominantly show characteristic deformation texture components. The weak texture after the 2nd pass results from the combination of a weakly-textured starting AA2219 layer and a strongly-textured starting AA5086 layer. A strong deformation texture forms due to the high imposed strain after a higher number of ARB passes. Subgrain formation and related shear banding induces copper/S components in the case of the small elongated grains, while planar slip leads to the formation of brass component in the large elongated grains.

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“…After 3rd pass, the B/ B components were the strongest, a characteristic signature of low SFE material. 23) Studies were also carried out to investigate the evolution of ECAP textures in engineering alloys of aluminium, namely the AlCu alloy (AA2014) 24,25) and it was revealed that the evolution of texture was strongly dependent on the starting microstructures and processing routes. The starting material in aged condition developed weaker textures compared to the solution treated samples, after 5 passes of ECAP, which was attributed to higher scattering of strain during deformation by the fine precipitates in the aged samples.…”

Section: Equal Channel Angular Pressing (Ecap)mentioning

confidence: 99%

Texture Evolution in Severe Plastic Deformation Processes

Suwas

Mondal

2019

Mater. Trans.

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Severe plastic deformation processes involve large grain rotations due to the action of different modes of plastic deformation and other microstructural changes which lead to characteristic texture formation. The present review deals with the evolution of texture during the most important severe plastic deformation processes, namely Equal Channel Angular Pressing (ECAP), High Pressure Torsion (HPT), Friction Stir Processing (FSP), Accumulative Roll Bonding (ARB) and Multi-Axial Forging (MAF). First three of the processes are shear based, while the latter two are plane-strain based. The textures formed during ECAP are visually different from simple shear textures due to (i) the inclination of the shear plane, (ii) additional contribution of non-shear based deformation. The relative intensities of texture components are function of deformation micro-mechanisms, amount of straining and configuration of the strain path. The texture evolved during HPT is very similar to simple shear texture, with additional consequences of microstructural changes that occur due to very large deformations. The textures formed in FSP process also resemble shear textures. On the other hand, texture evolution during ARB and MAF can be described using plane strain deformation. The present review deals with texture evolution during severe plastic deformation as a function of nature of processes and type of materials.

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Texture evolution in an Al–Cu alloy during equal channel angular pressing: the effect of starting microstructure

Cited by 13 publications

References 33 publications

Development of ultrafine grained Al–Zn–Mg–Cu alloy by equal channel angular pressing: microstructure, texture and mechanical properties

Development of ultrafine grained Al–Zn–Mg–Cu alloy by equal channel angular pressing: microstructure, texture and mechanical properties

Microstructure and texture evolution during accumulative roll bonding of aluminium alloys AA2219/AA5086 composite laminates

Texture Evolution in Severe Plastic Deformation Processes

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