Journal ArticleDOI
Using high-pressure torsion for metal processing: Fundamentals and applications
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TLDR
High pressure torsion (HPT) is a well-known technique for metal forming as discussed by the authors, where samples are subjected to a compressive force and concurrent torsional straining.About:
This article is published in Progress in Materials Science.The article was published on 2008-08-01. It has received 2499 citations till now.read more
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Observation of shear bands in the Vitreloy metallic glass subjected to HPT processing
Dmitry Gunderov,Anna Churakova,E.V. Boltynjuk,Evgeniy Ubyivovk,V V Astanin,R.N. Asfandiyarov,Ruslan Z. Valiev,Ruslan Z. Valiev,W. Xioang,Jing Tao Wang +9 more
TL;DR: In this article, the parameters of shear band evolution with deformation were examined in the Vit105 bulk metallic glass and two halves of disks were joined together and processed by high-pressure torsion for various strains: from compression without rotation, to rotation for 5 revolutions.
Journal ArticleDOI
A magnesium-aluminium composite produced by high-pressure torsion
Moara M. Castro,Shima Sabbaghianrad,Pedro Henrique R. Pereira,E.M. Mazzer,Augusta Isaac,Terence G. Langdon,Terence G. Langdon,Roberto B. Figueiredo +7 more
TL;DR: A magnesium/aluminium composite was produced by room temperature consolidation through high-pressure torsion (HPT) processing as mentioned in this paper, where half-discs of the pure metals were placed side-by-side and subjected to different numbers of turns.
Journal ArticleDOI
Single-roll angular-rolling: A new continuous severe plastic deformation process for metal sheets
TL;DR: In this paper, a single-roll angular-rolling (SRAR) process was proposed to achieve maximized deformation homogeneity of metal sheets by combining circumferential shear deformation with channel-angular deformation.
Journal ArticleDOI
Accumulative fold-forging (AFF) as a novel severe plastic deformation process to fabricate a high strength ultra-fine grained layered aluminum alloy structure
TL;DR: In this paper, a severe plastic deformation (SPD) process termed accumulative fold forging (AFF) is introduced to fabricate a homogenous ultra-fine grained (UFG) layered metal structure by repetitive folding and forging aluminum alloy foil.
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Mechanically driven annealing twinning induced by cyclic deformation in nanocrystalline Cu
TL;DR: In this paper, the formation of twins ∼100-500-nm thick in nanocrystalline Cu during cyclic deformation has been studied, which is related to the emission of Shockley partials from extensively migrating grain boundaries.
References
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Journal ArticleDOI
Bulk nanostructured materials from severe plastic deformation
TL;DR: In this article, the authors present methods of severe plastic deformation and formation of nanostructures, including Torsion straining under high pressure, ECA pressing, and multiple forging.
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Principles of equal-channel angular pressing as a processing tool for grain refinement
TL;DR: In this article, a review examines recent developments related to the use of ECAP for grain refinement including modifying conventional ECAP to increase the process efficiency and techniques for up-scaling the procedure and for the processing of hard-to-deform materials.
Journal ArticleDOI
Novel ultra-high straining process for bulk materials—development of the accumulative roll-bonding (ARB) process
TL;DR: In this paper, the accumulative roll-bonding (ARB) method was proposed to introduce high plastic strain without any geometrical change if the reduction in thickness is maintained to 50% every rolling pass.
Journal ArticleDOI
Producing bulk ultrafine-grained materials by severe plastic deformation
Ruslan Z. Valiev,Yuri Estrin,Zenji Horita,Zenji Horita,Terence G. Langdon,Michael J. Zehetbauer,Yuntian Zhu +6 more
TL;DR: In this article, an overview of recent achievements and new trends in the production of bulk ultrafine-grained (UFG) materials using severe plastic deformation (SPD) is presented.