Effect of Cu content and number of passes on evolution of microstructure and mechanical properties of ECAPed Al/Cu alloys

Mahallawy, Nahed El; Shehata, F.; Hameed, Mohamed Abd El; Aal, Mohamed Ibrahim Abd El

doi:10.1016/j.msea.2009.03.063

Cited by 25 publications

(6 citation statements)

References 16 publications

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“…It was reported that the hard ª phase particles after ECAP were fragmented across the sample: from the 5 µm to an average particle size of 600 nm. 17,20) Figure 4 shows the EDS spectrum analysis of the ª phase in the as-cast sample after the HPT process. The table in Fig.…”

Section: )mentioning

confidence: 99%

Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al–Cu Alloy during High-Pressure Torsion

Aal

Choi

et al. 2014

Mater. Trans.

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As-cast and homogenization treated as-cast AlCu (3 mass% Cu) alloy samples were processed via high-pressure torsion (HPT) under an applied pressure of 8 GPa with 5 revolutions at room temperature. Microstructure, mechanical properties, and fracture surface morphology of the HPT-processed AlCu were investigated, demonstrating that the HPT process successfully resulted in distinct grain refinements in both samples. Significant improvements in the microhardness, tensile properties, and deformation homogeneity due to fine grains, high grain boundary misorientation angle, and homogeneous distribution of the ª phase were achieved after the HPT process of the homogenized sample. The homogenization treatment of the as-cast AlCu has a significant effect on the fracture surface morphology and fracture mode of the HPTprocessed samples.

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Section: )mentioning

confidence: 99%

Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al–Cu Alloy during High-Pressure Torsion

Aal

Choi

et al. 2014

Mater. Trans.

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“…Goodarzy et al [49] explored the effect of subsequent annealing after ECAP processing on both the hardness and yield strength of AA2024, they noted that a further improvement on hardness and yield strength of the ECAPed samples coupled with a considerable homogenization in the microstructure compared to the naturally-aged samples. The effect of Cu content on the hardness and mechanical properties was studied in [50]. The noted that increasing both the number of ECAP passes and the Cu content resulted in increasing the ultimate strength and the proof strength, while increasing the Cu content up to 2wt% revealed decreasing in the ductility.…”

Section: Introductionmentioning

confidence: 99%

Effect of ECAP on the Plastic Strain Homogeneity, Microstructural Evolution, Crystallographic Texture and Mechanical Properties of AA2xxx Aluminum Alloy

El-Shenawy

Ahmed

Nassef

et al. 2021

Metals

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This study presents a comprehensive evaluation of Equal Channel Angular Pressing (ECAP) processing on the structural evolution and mechanical properties of AA2xxx aluminum alloy. Finite element analysis (FE) was used to study the deformation behavior of the AA2xxx billets during processing in addition investigate the strain homogeneity in the longitudinal and transverse direction. Billets of AA2011 aluminum alloy were processed successfully through ECAP up to 4-passes with rotating the sample 90° along its longitudinal axis in the same direction after each pass (route Bc) at 150 °C. The microstructural evolution and crystallographic texture were analyzed using the electron back-scatter diffraction (EBSD) and optical microscopy (OM). An evaluation of the hardness and tensile properties was presented and correlated with the EBSD findings and FE simulations. The FE analysis results were in good agreement with the experimental finding and microstructural evolution. Processing through 4-passes produced an ultrafine-grained structure (UFG) and a recrystallized fine grain dominated the structure coupled with a geometric grain subdivision which indicated by grain refining and very high density of substructures. This reduction in grain size was coupled with an enhancement in the hardness, tensile strength by 66.6%, and 52%, respectively compared to the as-annealed counterpart. Processing through 1-pass and 2-passes resulted in a strong texture with significant rotation for the texture components whereas 4-passes processing led to losing the symmetry of the texture with significant reduction in the texture intensity.

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“…It is therefore expected that a high solute content of Cu also favours the generation of a bimodal grain structure in Al-Cu alloys subjected to SPD and thus possibly enhances the ductility. However, most Al-Cu alloys (containing 2-4 wt.% Cu) subjected to RT-ECAP show a uniform grain structure and they have an ultimate tensile strength (UTS) of ~290-450 MPa and a uniform elongation ( ) of ~1-4% [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The deformation and work hardening behaviour of a SPD processed Al-5Cu alloy

Jia

Bjørge

Marthinsen

et al. 2017

Journal of Alloys and Compounds

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An Al-5 wt.% Cu alloy supersaturated with Cu in solid solution was subjected to equal channel angular pressing (ECAP). The microstructural evolution was systematically investigated by backscattered electron (BSE) imaging, electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). It is revealed that a bimodal grain structure composed of coarse micron-sized grains and submicron-sized grains was developed after four passes of ECAP. Tensile testing showed that a high ultimate tensile strength of ~500 MPa, a high elongation to failure of ~28% and a uniform elongation of ~5% were achieved simultaneously. The deformation behaviour and the grain structure evolution during ECAP, the strengthening mechanisms of the as-deformed material, and especially, the role played by a high content of Cu have been discussed.

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Effect of Cu content and number of passes on evolution of microstructure and mechanical properties of ECAPed Al/Cu alloys

Cited by 25 publications

References 16 publications

Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al–Cu Alloy during High-Pressure Torsion

Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al–Cu Alloy during High-Pressure Torsion

Effect of ECAP on the Plastic Strain Homogeneity, Microstructural Evolution, Crystallographic Texture and Mechanical Properties of AA2xxx Aluminum Alloy

The deformation and work hardening behaviour of a SPD processed Al-5Cu alloy

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Effect of Cu content and number of passes on evolution of microstructure and mechanical properties of ECAPed Al/Cu alloys

Cited by 25 publications

References 16 publications

Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al&ndash;Cu Alloy during High-Pressure Torsion

Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al&ndash;Cu Alloy during High-Pressure Torsion

Effect of ECAP on the Plastic Strain Homogeneity, Microstructural Evolution, Crystallographic Texture and Mechanical Properties of AA2xxx Aluminum Alloy

The deformation and work hardening behaviour of a SPD processed Al-5Cu alloy

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Product

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Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al–Cu Alloy during High-Pressure Torsion

Effect of Homogenization Treatment on the Microstructure and Mechanical Property Evolutions of As-Cast Al–Cu Alloy during High-Pressure Torsion