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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Using finite element modeling to examine the flow processes in quasi-constrained high-pressure torsion
TL;DR: In this article, a finite element model was used to examine the flow processes in high pressure torsion (HPT) when using quasi-constrained conditions where disks are contained within depressions on the inner surfaces of the upper and lower anvils.
Journal ArticleDOI
Using finite element modeling to examine the temperature distribution in quasi-constrained high-pressure torsion
Roberto B. Figueiredo,Pedro Henrique R. Pereira,Maria Teresa Paulino Aguilar,Paulo Roberto Cetlin,Terence G. Langdon,Terence G. Langdon +5 more
TL;DR: In this article, the authors used finite element modeling with an analytical component to evaluate the thermal characteristics in quasi-constrained high pressure torsion (HPT) processing.
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Recent advances in ageing of 7xxx series aluminum alloys: A physical metallurgy perspective
TL;DR: In this article, a wide variety of ageing procedures have been developed to tailor the evolved microstructures so as to yield a good combination of mechanical capacity and corrosion resistance of 7xxx series Al alloys.
Journal ArticleDOI
Fundamentals of superior properties in bulk NanoSPD materials
Ruslan Z. Valiev,Yuri Estrin,Zenji Horita,Terence G. Langdon,Terence G. Langdon,Michael J. Zehetbauer,Yuntian Zhu,Yuntian Zhu +7 more
TL;DR: In this article, the authors provide a critical overview of the properties of bulk nanoSPD materials, with a focus on the fundamentals for the observed extraordinary properties, including the unique nanostructures that lead to the superior properties, the underlying deformation mechanisms, critical issues that remain to be investigated, future research directions, and the application potential of such materials.
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Recent Advances in Friction Stir Welding/Processing of Aluminum Alloys: Microstructural Evolution and Mechanical Properties
TL;DR: Friction stir welding (FSW) has been termed as green technology due to its energy efficiency and environment friendliness as mentioned in this paper, which is an enabling technology for joining metallic materials, in particular lightweight high-strength aluminum and magnesium alloys.
References
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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.
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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.
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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.