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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Microstructure evolution of CuZr polycrystals processed by high-pressure torsion
TL;DR: The microstructure evolution of extruded Cu-0.18% Zr polycrystals processed by high-pressure torsion (HPT) at room temperature at the pressure of 4 GPa and the different number of the HPT revolutions was investigated using the combination of the electron back-scatter diffraction, microhardness measurements and the X-ray diffraction.
Journal ArticleDOI
Evaluation of microstructure and mechanical properties of Al–Zn alloy during rolling
TL;DR: In this article, solid solution-treated binary Al-20% Zn alloy was deformed by rolling and accumulative roll bonding in the equivalent strain range of 0.19-12.05 at room temperature.
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On the Heterogeneity of Local Shear Strain Induced by High-Pressure Torsion
Wei Jiang,Hao Zhou,Cao Yang,Jinfeng Nie,Yusheng Li,Yonghao Zhao,Megumi Kawasaki,Terence G. Langdon,Yuntian Zhu,Yuntian Zhu +9 more
TL;DR: In this paper, a ductile duplex stainless steel consisting of a ferrite phase and an austenitic phase was chosen as a model material to investigate the development of shear strain patterns under high pressure torsion.
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Micro-Mechanical Response of an Al-Mg Hybrid System Synthesized by High-Pressure Torsion
Megumi Kawasaki,Jae-il Jang +1 more
TL;DR: The present paper demonstrates that, in addition to conventional tensile testing, the nanoindentation technique is exceptionally promising for ultrafine-grained materials processed by HPT, where the samples may have small overall dimensions and include heterogeneity in the microstructure.
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Influence of Annealing on Microstructural Evolution, Precipitation Sequence, and Fracture Toughness of Cryorolled Al–Cu–Si Alloy
TL;DR: In this paper, microstructural evolution, precipitation sequence, and fracture toughness of cryorolled Al 2014 alloy subjected to annealing treatment were investigated, and the improvement in fracture toughness was attributed to the formation of GP zones and metastable phase θ′.
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.
Journal ArticleDOI
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.
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.