Achieving Exceptional Grain Refinement through Severe Plastic Deformation: New Approaches for Improving the Processing Technology

Valiev, Ruslan Z.; Langdon, Terence G.

doi:10.1007/s11661-010-0556-0

Cited by 87 publications

(47 citation statements)

References 74 publications

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“…Nevertheless, as described in a recent report [41], there are several new developments in HPT processing including the use of small cylindrical samples [42,43] and the introduction of a continuous HPT processing for use with strip samples and wires [44,45]. These developments attest to the increasing viability of the HPT processing method.…”

Section: Discussionmentioning

confidence: 99%

Using an Al–Cu binary alloy to compare processing by multi-axial compression and high-pressure torsion

Zhang

et al. 2013

Materials Science and Engineering: A

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a b s t r a c tAn Al-4% Cu alloy was selected as a model material in order to compare two different procedures for imposing severe plastic deformation: multi-axial compression (MAC) and high-pressure torsion (HPT). In MAC a compressive strain is applied to prismatic samples in a sequential order along three orthogonal directions and the process is repeated to large numbers of passes in order to attain high strains. In HPT a thin disk is held between anvils and subjected to a high applied pressure and concurrent torsional straining. The results show that HPT is the optimum procedure for producing a homogeneous ultrafinegrained material. Specifically, HPT is preferable because it produces materials having a larger degree of homogeneity and the equilibrium grain sizes are smaller and the Vickers microhardness values are higher than when processing by MAC.

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Section: Discussionmentioning

confidence: 99%

Using an Al–Cu binary alloy to compare processing by multi-axial compression and high-pressure torsion

Zhang

et al. 2013

Materials Science and Engineering: A

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“…Both are especially attractive for research because they produce materials having smaller grain sizes and higher fractions of highangle grain boundaries than most other SPD techniques. 3,5 These two main techniques are applied in the examples now described.…”

Section: New Properties Achieved Through Spd Processingmentioning

confidence: 99%

“…The present article, published 10 years later, describes the more recent developments in this rapidly expanding research field with special emphasis on the potential for achieving exceptional physical, mechanical, and functional properties that cannot be attained through the use of conventional techniques. New activities, including a classic development within the general framework of SPD processing, have been described in several recent reviews, [2][3][4][5][6][7][8][9][10][11][12][13][14] but the present article offers the first opportunity to provide a more detailed overview of some of the important developments since the earlier article in 2006.…”

Section: Introductionmentioning

confidence: 99%

Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation: Ten Years Later

Valiev

Estrin

Horita

et al. 2016

JOM

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It is now well established that the processing of bulk solids through the application of severe plastic deformation (SPD) leads to exceptional grain refinement to the submicrometer or nanometer level. Extensive research over the last decade has demonstrated that SPD processing also produces unusual phase transformations and leads to the introduction of a range of nanostructural features, including nonequilibrium grain boundaries, deformation twins, dislocation substructures, vacancy agglomerates, and solute segregation and clustering. These many structural changes provide new opportunities for fine tuning the characteristics of SPD metals to attain major improvements in their physical, mechanical, chemical, and functional properties. This review provides a summary of some of these recent developments. Special emphasis is placed on the use of SPD processing in achieving increased electrical conductivity, superconductivity, and thermoelectricity, an improved hydrogen storage capability, materials for use in biomedical applications, and the fabrication of high-strength metal-matrix nanocomposites.

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“…The last two processes, ECAP and ARB, can potentially produce nanomaterials in sheets and rods in both sizes and quantities suitable for structural applications. [24][25][26] * Corresponding author. Email: carpenter@lanl.gov Nanostructuring (< 100 nm characteristic length scales) has been achieved primarily for cubic metals, such as face-centered cubic (fcc) and body-centered cubic (bcc) as well as composite combinations of the two, i.e.…”

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The Suppression of Instabilities via Biphase Interfaces During Bulk Fabrication of Nanograined Zr

Carpenter

Nizolek

McCabe

et al. 2014

Materials Research Letters

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Achieving Exceptional Grain Refinement through Severe Plastic Deformation: New Approaches for Improving the Processing Technology

Cited by 87 publications

References 74 publications

Using an Al–Cu binary alloy to compare processing by multi-axial compression and high-pressure torsion

Using an Al–Cu binary alloy to compare processing by multi-axial compression and high-pressure torsion

Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation: Ten Years Later

The Suppression of Instabilities via Biphase Interfaces During Bulk Fabrication of Nanograined Zr

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