Effect of Accumulative Roll Bonding (ARB) strain path on microstructural evolution and crystallographic texture development in aluminium

Sarvi, Zohreh; Sadeghi, Alireza; Mashhadi, Mahmoud Mosavi; Guo, Baoqi

doi:10.1016/j.jmrt.2022.09.099

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…Figure 7 demonstrates the {111} pole figures (PFs) for the M1 (Figure 7a), M2 (Figure 7b) and M3 (Figure 7c) samples after three cycles. The positions of ideal orientation for the Cube {001} <100>, Goss {011} <001>, Brass {011} <211>, S {123} <634> and Copper {112} <111> texture components were marked in the {111} PFs [30,31]. It was observed that in the M1 (Figure 6a) specimen, the main texture components were the S {123} <634> component with an intensity of 2.1 × R, and the weak texture showing in M1 were Cube {001} <100> and Brass {011} <211> with an intensity of 1.6 × R and 1.2 × R. In the case of the M2 samples (Figure 7b), the main texture components were Brass {011} <211> and S {123} <634> with a maximum intensity of 5.5 × R and 2.4 × R. A weak Cube {001} <100> texture component was also present in the M2 samples with an intensity of 1.2 × R. The texture components of the M3 samples (Figure 7c) could be characterized as Brass {011} <211>, S {123} <634> and Cube {001} <100> with a maximum intensity of 3.8 × R, 2.2 × R and 1.3 × R, respectively.…”

Section: Microstructure Evolutionmentioning

confidence: 99%

Microstructure, Texture and Mechanical Properties of Al-SiC Composite with Bimodal Structure Fabricated by Multi-Layer Accumulative Roll Bonding

Zhang

Wei

et al. 2023

Coatings

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A multi-layer accumulative roll bonding (MARB) process was applied to fabricate Al-1 vol% SiC composite (M3) with bimodal structure consisting of 1.07 μm ultrafine grain layers and 0.48 μm finer grain layers. The differences in microstructure, texture and mechanical properties of the M3 samples were systematically compared with conventional MARB-processed Al (M1) and bimodal Al (M2) samples. Optical microscopy (OM), scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) analysis were used to characterize the microstructure evolution of the composites, while the mechanical properties were analyzed by tensile and microhardness tests. As revealed by EBSD results after three cycles, the M3 samples had a bimodal grain structure of 0.48 and 1.07 μm. The texture components of the M3 samples were Brass {011} <211>, S {123} <634>, Cube {001} <100> and Copper {112} <111>. According to SEM observation, ductile fracture of M3 was characterized by acicular dimple and circular micropores. Bimodal Al-SiC composites with high strength (225 MPa) and elongation (13%) were finally synthesized after three cycles. Compared with M1 sheets, the strength and elongation of the M3 sheets increased by 23.2% and 7.4%, respectively, indicating that the M3 samples achieved a synergistic improvement in strength and plasticity.

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Section: Microstructure Evolutionmentioning

confidence: 99%

Microstructure, Texture and Mechanical Properties of Al-SiC Composite with Bimodal Structure Fabricated by Multi-Layer Accumulative Roll Bonding

Zhang

Wei

et al. 2023

Coatings

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“…There is no limit to the number of ARB rolling passes that can be applied, except for eventual ductile fractures during processing. ARB has received wide attention in the literature [2][3][4][5][6][7] and leads to high levels of strain, remarkable grain refinement and hardening of the material. [8][9][10] Standard rolling procedures and equipment are utilised, allowing the industrial production of nanostructured materials.…”

Section: Introductionmentioning

confidence: 99%

New aspects of solid-state welding in the aluminium accumulative roll bonding

Trajano,

Haase,

Aguilar

et al. 2024

Materials Science and Technology

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The phenomena in solid-state welding (SSW) of metals during accumulative roll bonding (ARB) are analysed. The basic mechanism in SSW is described by the ‘film theory’, where superficial oxide layers/cover layers of metals fracture when submitted to elongations, the material on both sides of the sheets to be joined are extruded through these fractures and opposing virgin surfaces touch and weld. Present results reveal new aspects of these phenomena: the presence of ‘mountain ridges’ on delaminated surfaces after ARB, bonding regions along the rolling direction and the flattening of the geometric characteristics of delaminated surfaces as the number of ARB passes rises. A model is proposed for the development of the bonds along the rolling direction.

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“…Pure metals have a diversity of mechanical characteristics that have been enhanced by the development of alloys and composites including metals and nonmetals, respectively. Further mechanical properties of these alloys and composites are significantly enhanced by severe plastic deformation techniques [1][2][3][4]. These techniques are used to refine the microstructure of the material mostly below 1 μm, resulting in significantly improved mechanical characteristics [5,6].…”

Section: Introductionmentioning

confidence: 99%

Evolution of microstructure and mechanical characteristics of friction stir welded ultrafine‐grained aluminum alloy 6082

Verma,

Padap

2023

Materialwissenschaft Werkst

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Bulk production of ultrafine‐grained material is in great demand presently. Ultrafine‐grained material can be synthesized using accumulative roll bonding, which is a prominent severe plastic deformation technique to develop such materials in bulk. There are further challenges in the fabrication of ultrafine‐grained material. Friction stir welding is a potential technique to join the ultrafine‐grained material while maintaining its mechanical and microstructural characteristics stability as no fusion is required. The present research work demonstrates the microstructural and mechanical characteristics of various welding zone after friction stir welding of ultrafine‐grained aluminum alloy 6082. The microstructural features were examined using optical microscopy and the electron back‐scattered diffraction technique. The variation in mechanical characteristics was observed using tensile and microhardness tests. The fractography of tensile specimens was studied to identify the mode of failure. The present study demonstrates the viability of friction stir welding to join ultrafine‐grained aluminum alloy 6082 developed by accumulative roll bonding. The ultrafine grain size of 0.52 μm was achieved after four accumulative roll bonding cycles. The microhardness of accumulative roll bonding processed samples and the tensile strength of the weld joint were increased about two times and 1.6 times respectively compared to the annealed sample.

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Effect of Accumulative Roll Bonding (ARB) strain path on microstructural evolution and crystallographic texture development in aluminium

Cited by 9 publications

References 31 publications

Microstructure, Texture and Mechanical Properties of Al-SiC Composite with Bimodal Structure Fabricated by Multi-Layer Accumulative Roll Bonding

Microstructure, Texture and Mechanical Properties of Al-SiC Composite with Bimodal Structure Fabricated by Multi-Layer Accumulative Roll Bonding

New aspects of solid-state welding in the aluminium accumulative roll bonding

Evolution of microstructure and mechanical characteristics of friction stir welded ultrafine‐grained aluminum alloy 6082

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