Journal ArticleDOI
Materials processing by simple shear
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TLDR
In this paper, simple shear can be considered a "near ideal" deformation method for structure and texture formation in metal-working, and the unusual effects that are observed in both the structure and physical-mechanical properties of various metals and alloys suggest many new applications of the simple Shear method in materials synthesis and processing.Abstract:
It is shown that simple shear can be considered a “near ideal” deformation method for structure and texture formation in metal-working. Equal channel angular extrusion (ECAE) is a special industrial process employed to realize this method. In comparison with traditional metal-working operations, this process has a number of advantages; the most important is that extra-large, strictly uniform and unidirectional deformations can be produced under relatively low pressure and load for massive products. The unusual effects that are observed in both the structure and physical-mechanical properties of various metals and alloys suggest many new applications of the simple shear method in materials synthesis and processing.read more
Citations
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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.
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
Extreme grain refinement by severe plastic deformation: A wealth of challenging science
Yuri Estrin,Alexei Vinogradov +1 more
TL;DR: A brief overview of the available SPD technologies is given in this paper, along with a summary of unusual mechanical, physical and other properties achievable by SPD processing, as well as the challenges this research is facing, some of them generic and some specific to the nanoSPD area.
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.
Journal ArticleDOI
The process of grain refinement in equal-channel angular pressing
TL;DR: In this article, experiments were conducted on high purity aluminum to investigate the process of grain refinement during equal-channel angular (ECA) pressing, where samples were subjected to 1 to 4 pressings and then sectioned for microstructural examination in three mutually perpendicular directions.
References
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Journal ArticleDOI
Deformation-induced anisotropy of the critical current in single crystal niobium
Jeremy A. Good,Edward J. Kramer +1 more
TL;DR: In this paper, the critical current exhibits local maxima when the magnetic field is directed along the [1 0] and [001] directions, and the maximum is sensitive to the condition of the sample surface and exhibits rectification.
Journal ArticleDOI
Theoretical analysis of the channel die compression test—I. General considerations and finite deformation of F.C.C. crystals in stable lattice orientations
P.L. Sue,Kerry S. Havner +1 more
TL;DR: In this article, an extensive theoretical investigation of f.c. crystals under [110] loading in the channel die compression test is presented, and two lattice orientations known from experiment to be stable relative to the channel axes, through large deformations, are investigated for each of four hardening laws.
Journal ArticleDOI
A study of shear deformation and work hardening of metals under pressures to 2100 mpa
TL;DR: Workhardening curves have been obtained from thin disks being sheared undirectionally between Bridgman anvils under normal pressures up to 2100 MPa as mentioned in this paper, where the materials tested were hard-rolled aluminum, aluminum alloy 2124-T6 and the same alloy reinforced with 20% chopped SiC fibers with the fibers initially both parallel to and normal to the disks.