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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Microstructural evolution in ultrafine-grained titanium processed by high-pressure torsion under different pressures
TL;DR: In this paper, a grade 2 commercially pure (CP) titanium was processed by high pressure torsion (HPT) at pressures of 3.0 and 6.0, respectively, in order to achieve improved strengths.
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Comparing the evolution and deformation mechanisms of lamellar and equiaxed microstructures in near β-Ti alloys during hot deformation
TL;DR: In this paper, the authors investigated the microstructural evolution and deformation mechanism of lamellar and equiaxed Ti-55511 alloys during hot deformation and provided insight into the deformation behavior of ultra-fine-grained microstructures with excellent mechanical properties.
Journal ArticleDOI
The ductile to brittle transition of ultrafine-grained Armco iron: an experimental study
TL;DR: In this paper, the authors performed fracture toughness measurements on bcc iron (Armco-iron), which is subjected to severe plastic deformation (SPD), and with subsequent heat treatments the grain size varied between 300 nm and 5 μm.
Journal ArticleDOI
Superplastic flow in a nanostructured aluminum alloy produced using high-pressure torsion
TL;DR: In this article, a spray-cast Al-7034 alloy was processed by high pressure torsion (HPT) at temperatures of 293 or 473 K using an imposed pressure of 4 GPa and torsional straining through five revolutions.
Journal ArticleDOI
Improving the fatigue behavior of dental implants through processing commercial purity titanium by equal-channel angular pressing
Roberto B. Figueiredo,Eduardo R. de C. Barbosa,Xicheng Zhao,Xirong Yang,Xiaoyan Liu,Paulo Roberto Cetlin,Terence G. Langdon,Terence G. Langdon +7 more
TL;DR: In this article, the feasibility of using commercial purity (CP) titanium of grade 1 for dental implants after processing by equal-channel angular pressing (ECAP) was evaluated in tensile and compression testing and in fatigue.
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.