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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Wear resistance and electroconductivity in copper processed by severe plastic deformation
Alexander P. Zhilyaev,Iaroslava Shakhova,Andrey Belyakov,Rustam Kaibyshev,Terence G. Langdon,Terence G. Langdon +5 more
TL;DR: In this article, the wear properties and electroconductivity of three ultra-fine grained (UFG) commercially pure copper materials, subjected to combinations of high-pressure torsion (HPT) and equal-channel angular pressing (ECAP), were studied and compared with conventional coarse-grained (CG) copper.
Journal ArticleDOI
Microstructure stability of ultra-fine grained magnesium alloy AZ31 processed by extrusion and equal-channel angular pressing (EX–ECAP)
TL;DR: In this article, the thermal stability of the ultra-fine grained (UFG) microstructure of magnesium AZ31 alloy was investigated, which was achieved by a combined two-step severe plastic deformation process: the extrusion (EX) and subsequent equal-channel angular pressing (ECAP).
Journal ArticleDOI
The effect of grain size and grain boundary misorientation on the corrosion resistance of commercially pure aluminium
TL;DR: In this paper, the effect of microstructure on electrochemical response of commercially pure aluminium was investigated, and the results revealed insignificant differences for samples with different grain size, shape and fraction of HAGBs.
Journal ArticleDOI
Ultra-high tensile strength nanocrystalline CoCrNi equi-atomic medium entropy alloy processed by high-pressure torsion
Abstract: A nanocrystalline CoCrNi alloy of ~50 nm grain size with the ultra-high ultimate tensile strength of ~2.2 GPa and fracture strain of ~9% was fabricated using high-pressure torsion. The presence of high density of nano-twins, stacking faults, dislocations, and nano-grains is attributed to the superior mechanical properties.
Journal ArticleDOI
Photocatalytic hydrogen evolution on a high-entropy oxide
Parisa Edalati,Qing Wang,Hadi Razavi-Khosroshahi,Masayoshi Fuji,Tatsumi Ishihara,Tatsumi Ishihara,Kaveh Edalati +6 more
TL;DR: In this paper, the first high-entropy photocatalyst is synthesized by mechanical alloying via the high-pressure torsion (HPT) method followed by high-temperature oxidation.
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.
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.