Analysis of the mechanical properties and deformation behavior of nanostructured commercially pure Al processed by equal channel angular pressing (ECAP)

Reihanian, M.; Ebrahimi, R.; Tsuji, Nobuhiro; Moshksar, M.M.

doi:10.1016/j.msea.2007.04.075

Cited by 139 publications

(48 citation statements)

References 20 publications

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“…Ultrafine grains with high angle boundaries impede the motion of dislocations [27]. Therefore, during ECAP process the dislocation density increases and the average boundary spacing decreases, both of which contribute to the strengthening of materials [28]. This trend continues up to eight passes in both routes.…”

Section: Mechanical Testingmentioning

confidence: 99%

Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

et al. 2013

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Section: Mechanical Testingmentioning

confidence: 99%

Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

et al. 2013

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“…4, and the effects of the dislocation can be completely ignored. The dislocation density in aluminum prepared by ECAE was at most 3.8 © 10 14 nm ¹2 , 61) and that by accumulative roll bonding (ARB) was at most 1.3 © 10 14 nm…”

Section: Effects Of Dislocationmentioning

confidence: 99%

First-Principles Calculation of Grain Boundary Excess Volume and Free Volume in Nanocrystalline and Ultrafine-Grained Aluminum

Uesugi

Higashi

2013

Mater. Trans.

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We applied first-principles calculations to study the relationship between the grain boundary energy (GBE) and grain boundary excess free volume (BFV) at the tilt grain boundaries in aluminum. GBE increased linearly as the grain BFV increased and the value of the proportionality constant between them, ¡, was 13.8 GPa for aluminum. The grain boundary elastic energies calculated on the basis of first principles using a dummy boundary as well as the classical elasticity theory were close to the grain boundary energies. We examined the free volume in nanocrystalline and ultrafine-grained materials and proposed a method for estimating GBE using the density of nanocrystalline and ultrafinegrained materials with the proportionality constant ¡. The GBE of nanocrystalline aluminum fabricated by ball milling and subsequent consolidation was estimated to be comparable to or lesser than that in coarse-grained aluminum.

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“…These boundaries arise from the statistical trapping of dislocations. The second mechanism is the grain boundary strengthening via the Hall-Petch relationship by the formation of geometrically necessary boundaries (GNBs) arising from the difference in the slip system operating in the neighboring slip systems or the local strain difference within each grain [32]. b.…”

Section: Tensile Strengthmentioning

confidence: 99%

High-strength and high-conductive Cu/Ag multilayer produced by ARB

Ghalandari

Moshksar

2010

Journal of Alloys and Compounds

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Analysis of the mechanical properties and deformation behavior of nanostructured commercially pure Al processed by equal channel angular pressing (ECAP)

Cited by 139 publications

References 20 publications

Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

First-Principles Calculation of Grain Boundary Excess Volume and Free Volume in Nanocrystalline and Ultrafine-Grained Aluminum

High-strength and high-conductive Cu/Ag multilayer produced by ARB

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