Deformed metals and alloys with a structural scale from 5 nm to 100 nm

Zhang, H. W.; Hansen, Niels

doi:10.1007/s10853-006-0974-y

Cited by 16 publications

(15 citation statements)

References 46 publications

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“…Grain refinement induced by intense plastic deformation has been studied in depth (e.g. [11,12,[17][18][19]35,40]). However, the present experiments have revealed a feature.…”

Section: Discussionmentioning

confidence: 99%

“…The decrease in hardness could be related to the decreasing dislocation density, and the decrease in the dislocation density could be caused by the development of dislocation boundaries such as cell or subgrain walls [18,35,38]. The dislocation activity clearly led to the formation of the subgrains, which underwent further slip and rotation, resulting in the formation of the ultrafine grain polycrystalline structure [18][19][20]35,38]. One of these polycrystalline grains is shown in Fig.…”

Section: Parametersmentioning

confidence: 99%

“…The combine effect of joining and grain refinement resulted in the formation of the nanocrystalline bimetallic material [14][15][16]. In this present work, we present a technique for solid-state aluminizing that integrates the principles of surface severe plastic deformation (or SMAT) [17][18][19][20] and mechanical alloying [21]. As we will demonstrate herein, the proposed method does not involve special surface preparation, high pressure, or elevated temperatures and allows us to apply the aluminum layer from both sides of the work piece in one operation; moreover, we can simultaneously modify the work piece structure under the ball collisions (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Aluminizing a Ni sheet through severe plastic deformation induced by ball collisions

Romankov

Щетинин

Park

2015

Applied Surface Science

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“…Grain refinement induced by intense plastic deformation has been studied in depth (e.g. [11,12,[17][18][19]35,40]). However, the present experiments have revealed a feature.…”

Section: Discussionmentioning

confidence: 99%

Section: Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aluminizing a Ni sheet through severe plastic deformation induced by ball collisions

Romankov

Щетинин

Park

2015

Applied Surface Science

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“…Probability density distributions for D GNB spacings normalised by their average34 for Ni deformed by cold rolling (CR)32 and HPT35 and for Cu deformed by friction or sliding36…”

Section: Microstructural Evolution By Grain Subdivisionmentioning

confidence: 99%

Deformed metals – structure, recrystallisation and strength

Hansen

Jensen

2011

Materials Science and Technology

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It is shown how new discoveries and advanced experimental techniques in the last 25 years have led to paradigm shifts in the analysis of deformation and annealing structures of metals and in the way the strength of deformed samples is related to structural parameters. This is described in three sections: structural evolution by grain subdivision, recovery and recrystallisation and strength–structure relationships.

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“…The method of severe plastic deformation (SPD) is of great interest to the production of ultrafine-grain or nano-grain microstructures for metals and alloys [1][2][3][4][5][6][7][8][9][10][11][12][13]. Several SPD methods for producing bulk metals with sub-micrometer or nanometer grain size have been reported, e.g., high pressure torsion (HPT) [4,5], equal channel angular pressing (ECAP) [6,7] and accumulative roll bonding (ARB) [8].…”

Section: Introductionmentioning

confidence: 99%

Influence of processing temperature on microstructure and microhardness of copper subjected to high-pressure torsion

Xie

Hong

et al. 2010

Sci. China Technol. Sci.

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Cu samples were subjected to high-pressure torsion (HPT) with up to 6 turns at room temperature (RT) and liquid nitrogen temperature (LNT), respectively. The effects of temperature on grain refinement and microhardness variation were investigated. For the samples after HPT processing at RT, the grain size reduced from 43 μm to 265 nm, and the Vickers microhardness increased from HV52 to HV140. However, for the samples after HPT processing at LNT, the value of microhardness reached its maximum of HV150 near the center of the sample and it decreased to HV80 at the periphery region. Microstructure observations revealed that HPT straining at LNT induced lamellar structures with thickness less than 100 nm appearing near the central region of the sample, but further deformation induced an inhomogeneous distribution of grain sizes, with submicrometer-sized grains embedded inside micrometer-sized grains. The submicrometer-sized grains with high dislocation density indicated their nonequilibrium nature. On the contrary, the micrometer-sized grains were nearly free of dislocation, without obvious deformation trace remaining in them. These images demonstrated that the appearance of micrometer-sized grains is the result of abnormal grain growth of the deformed fine grains. copper, high pressure torsion (HPT), microstructure, grain size, microhardness, cryogenic temperature Citation:Xie Z L, Xie J J, Hong Y S, et al. Influence of processing temperature on microstructure and microhardness of copper subjected to high-pressure torsion.

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Deformed metals and alloys with a structural scale from 5 nm to 100 nm

Cited by 16 publications

References 46 publications

Aluminizing a Ni sheet through severe plastic deformation induced by ball collisions

Aluminizing a Ni sheet through severe plastic deformation induced by ball collisions

Deformed metals – structure, recrystallisation and strength

Influence of processing temperature on microstructure and microhardness of copper subjected to high-pressure torsion

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