Effect of Grain Shape on Texture Formation during Severe Plastic Deformation of Pure Copper

Jahedi, Mohammad; Beyerlein, Irene J.; Knežević, Marko

doi:10.1002/adem.201600829

Cited by 11 publications

(6 citation statements)

References 81 publications

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“…To date, there have been a few number of studies investigating the effects of grain shape on texture evolution. Jahedi et al [28] conducted both experiments and the VPSC simulation approach introduced by Beyerlein et al [29] to study systematically the effect of grain shape on texture evolution during simple shear deformation of Cu, which is also an FCC material with smaller stacking fault energy as compared with aluminum. The results from this study showed that an elongated grain shape microstructure resulted in a dominant C component in simple shear texture, whereas when using equiaxed grain shape, it was not the case (not shown here).…”

Section: Resultsmentioning

confidence: 99%

Modeling of Crystallographic Texture in Plastic Flow Machining

Tóth

Beygelzimer

et al. 2019

Adv Eng Mater

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Plastic flow machining (PFM) is proposed as a new severe plastic deformation (SPD) technique capable of producing ultrafine‐grained sheet metal from bulk sample. Herein, a model is proposed for the three strain paths that the material follows during the PFM extrusion process. The proposed strain paths are justified by modeling the texture evolution in good agreement with the experiments in the three deformation zones. Two polycrystal models are used to simulate texture evolution: the viscoplastic self‐consistent (VPSC) polycrystal approach and the Taylor‐type lattice curvature‐based grain fragmentation (GR) model. The simulations reproduce faithfully all three textures observed experimentally within the sheet. The experimental texture in the zone carrying the smallest strain is obtained with the VPSC approach, whereas in the higher strain region, the GR model reproduced the texture. The two main results of this modeling are as follows: 1) an example is presented for the successful identification of the deformation mode in a new SPD process with the help of the crystallographic texture. 2) At large strains, the VPSC model fails; it is the Taylor deformation‐based GR approach which is able to reproduce the experimental texture evolution.

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Section: Resultsmentioning

confidence: 99%

Modeling of Crystallographic Texture in Plastic Flow Machining

Tóth

Beygelzimer

et al. 2019

Adv Eng Mater

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“…The shape of the grains also strongly affects the development of the texture during HPT processing. A typical shear texture is formed when the microstructure is composed of equiaxed grains, while a microstructure with elongated grains leads to the formation of shear texture with a dominance of the C component [160].…”

Section: 122effect Of Initial Grain Sizementioning

confidence: 99%

Texture evolution in high-pressure torsion processing

Azzeddine

Bradai

Baudin

et al. 2022

Progress in Materials Science

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“…The above model for the critical activation stresses for slip and twin activation has been used in many types of crystal plasticity based modeling technique. For instance, it has been used in homogenization‐based polycrystal plasticity models, such as elasto‐plastic self‐consistent (EPSC) and visco‐plastic self‐consistent (VPSC), as well as within three‐dimensional, spatially resolved techniques, such as crystal plasticity finite element (CPFE) . The EPSC and CPFE models account for elastic deformation in addition to plastic deformation, whereas VPSC only treats plastic deformation.…”

Section: Applicationsmentioning

confidence: 99%

Multiscale Modeling of Microstructure‐Property Relationships of Polycrystalline Metals during Thermo‐Mechanical Deformation

Knežević

Beyerlein

2018

Adv Eng Mater

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The plastic deformation of polycrystalline metals is primarily carried by the crystallographic glide of dislocations and growth of deformation twins. According to the thermodynamic theory of slip, dislocation motion is thermally activated, while deformation twinning is an athermal process. Dislocations must overcome barriers in order to move, while twins must relax the stored energy while growing. These concepts define the critical activation stresses on a slip or twin crystallographic system and how they evolve with plastic strain. This article reviews recent advances in the development of a model for the critical activation stresses for thermally activated glide and the expansion of deformation twins, its implementation into polycrystal plasticity models, and several applications for predicting the constitutive response of polycrystalline metals. Calculations are performed for a range of polycrystalline metals differing in microstructural complexity and crystal structure. These examples include face-centered cubic AA6022-T4, IN718, Haynes 25, and pure Cu, body-centered cubic Nb, Ta, Ta-10W, and steel DP590, hexagonal close-packed pure Be, pure Zr, pure Ti, AZ31, Mg4Li, and orthorhombic U. Excellent agreement with experimental measurement are demonstrated in terms of texture, stress-strain response, and geometrical changes in the samples during deformation for all these metals.

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Effect of Grain Shape on Texture Formation during Severe Plastic Deformation of Pure Copper

Cited by 11 publications

References 81 publications

Modeling of Crystallographic Texture in Plastic Flow Machining

Modeling of Crystallographic Texture in Plastic Flow Machining

Texture evolution in high-pressure torsion processing

Multiscale Modeling of Microstructure‐Property Relationships of Polycrystalline Metals during Thermo‐Mechanical Deformation

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