Consolidation of commercial pure aluminum powder by torsional-equal channel angular pressing (T-ECAP) at room temperature

Mani, Behtash; Jahedi, Mohammad

doi:10.1016/j.powtec.2011.11.034

Cited by 33 publications

(16 citation statements)

References 25 publications

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“…Material samples synthesized using powder metallurgy typically contain pores in the microstructure, which is a significant issue [65,67,69,74,83,84]. In this study, the pore structures of Al and Al-CNT composite samples were investigated in the material as a function of ECAP passes and the geometric location in the sample (Figs.…”

Section: Pore Distributionmentioning

confidence: 99%

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Microstructure and mechanical properties of carbon nanotubes reinforced aluminum matrix composites synthesized via equal-channel angular pressing

Zare

Jahedi

Toroghinejad

et al. 2016

Materials Science and Engineering: A

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a b s t r a c tIn this work, 2 vol% carbon nanotubes (CNTs) reinforced aluminum (Al) matrix composites of superior microstructural homogeneity are successfully synthesized using Bc equal-channel angular extrusion (ECAP) route. The key step in arriving at high level of homogeneous distribution of CNTs within Al was preparation of the powder using simultaneous attrition milling and ultra-sonication processes. Microstructure as revealed by electron microscopy and absence of Vickers hardness gradients across the material demonstrate that the material reached the homogeneous state in terms of CNT distribution, porosity distribution, and grain structure after eight ECAP passes. To facilitate comparison of microstructure and hardness, samples of Al were processed under the same ECAP conditions. Significantly, the composite containing only 2 vol% exhibits 20% increase in hardness relative to the Al samples.

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Section: Pore Distributionmentioning

confidence: 99%

“…The hardness and strain values have direct relationship [71,82,83,88,[102][103][104]. To verify the strain trend, the finite element analysis results were shown in Fig.…”

Section: Hardness Of Al and Al-cnt Composites Processed By Ecapmentioning

confidence: 99%

Microstructure and mechanical properties of carbon nanotubes reinforced aluminum matrix composites synthesized via equal-channel angular pressing

Zare

Jahedi

Toroghinejad

et al. 2016

Materials Science and Engineering: A

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“…A series of methods preparing NC materials have been reported, such as inert gas condensation [20], high energy ball milling [21], severe plastic deformation [22,23], electrodeposition [24,25], crystallization of amorphous [26], and the materials produced by different method always exhibit diverse properties. By means of electrodeposition, it is capable of producing full dense metal with comparatively larger dimensions in a single batch.…”

Section: Preparation Of Materials and Samplesmentioning

confidence: 99%

Strain-delocalizing effect of a metal substrate on nanocrystalline Ni film

Zhou

Liu

et al. 2015

Materials Science and Engineering: A

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“…Many of these SPD techniques impose severe shear strains, such as equal channel angular extrusion or pressing (ECAP), high‐pressure torsion (HPT), and surface mechanical grinding treatment (SMGT) . In shear, textures develop that contain particular components of slow rotation rates .…”

Section: Introductionmentioning

confidence: 99%

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

2017

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In this study, the authors use a combination of electron backscattered diffraction and polycrystal plasticity modeling to study the effect of grain shape on texture development in high pressure torsion and high pressure double torsion in high purity Cu. With varying applied pressures and after a large amount of strain corresponding to two to four turns, the average aspect ratios of the grains has changed from being elongated under higher pressures to nearly equiaxed for lower pressures, while keeping the average grain size similar among all samples analyzed. Polycrystal modeling is used to help isolating the deformation effect from the grain shape effect. The authors show that grains with elongated shapes form shear textures with a predominant C component, whereas those with largely equiaxed grains possess conventional shear textures.

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Consolidation of commercial pure aluminum powder by torsional-equal channel angular pressing (T-ECAP) at room temperature

Cited by 33 publications

References 25 publications

Microstructure and mechanical properties of carbon nanotubes reinforced aluminum matrix composites synthesized via equal-channel angular pressing

Microstructure and mechanical properties of carbon nanotubes reinforced aluminum matrix composites synthesized via equal-channel angular pressing

Strain-delocalizing effect of a metal substrate on nanocrystalline Ni film

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

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