Journal ArticleDOI
Twenty-five years of ultrafine-grained materials: achieving exceptional properties through grain refinement
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TLDR
In this article, an overview of the more recent developments in this field, with special emphasis on the opportunities for achieving homogeneity in the as-processed materials and on the general characteristics of the mechanical properties achieved after SPD processing.About:
This article is published in Acta Materialia.The article was published on 2013-11-01. It has received 614 citations till now.read more
Citations
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The Effect of Multidirectional Forging on the Deformation and Microstructure of the Al-Mg Alloy
M. S. Kishchik,Anton D. Kotov,D. O. Demin,A. A. Kishchik,Sergey Aksenov,Anastasia V. Mikhaylovskaya +5 more
TL;DR: In this paper, the effect of multidirectional forging on the evolution of the grain structure and the parameters of secondary-phase particles in the aluminum-magnesium alloy (Russian grade 1565ch) has been investigated using scanning and transmission electron microscopy.
Journal ArticleDOI
Cyclic Extrusion Compression Process for Achieving Ultrafine-Grained 5052 Aluminum Alloy with Eminent Strength and Wear Resistance
TL;DR: In this article , the effect of the cyclic extrusion compression (CEC) process, as one of the prominent SPD techniques, on the wear behavior of AA5052 was investigated and microstructure evolution and mechanical properties of the sample before and after the process were experimentally examined and studied.
Journal ArticleDOI
Tribological analysis in Al–Mg–Zn alloy casting processed through equal channel angular pressing, compared with Al-7075 T6 alloy
D. Palacios-Robledo,J. Fresneda-García,E. Lorenzo-Bonet,L. Guerra-Fuentes,R. Deaquino-Lara,M.A.L. Hernandez-Rodriguez,E. Garcia-Sanchez +6 more
TL;DR: In this article, an extensive analysis of the microstructural, mechanical, and tribological response in a cast Al-Mg-Zn alloy processed through ECAP, developed in order to obtain a material with similar properties of the Al-7075 T6 alloy was presented.
Journal ArticleDOI
The influence of deformation by equal-channel angular pressing on the ageing response and precipitate fracturing: case of the Al–Ag alloy
TL;DR: In this article, an Al-17 % Ag alloy was processed by equal-channel angular pressing (ECAP) and aged at 400 °C for different lengths of time with the purpose of observing and quantifying the precipitation and competitive growth of the Al2Ag phase, as well as the precipitate fracturing and dissolution by ECAP.
Journal ArticleDOI
Strain Behavior of Nickel Alloy 200 during Multiaxial Forging through Finite Element Modeling
TL;DR: In this article, the influence of process parameters such as strain rate, friction, and initial temperature has been assessed through finite element simulation of Nickel 200 alloy and the Johnson-Cook equation was applied in simulating the MAF process.
References
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Journal ArticleDOI
The Deformation and Ageing of Mild Steel: III Discussion of Results
TL;DR: In this paper, an attempt is made to explain the observed phenomena in the yielding and ageing of mild steel, described in two previous papers, in the general terms of a grain-boundary theory.
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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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Using high-pressure torsion for metal processing: Fundamentals and applications
TL;DR: 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.
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Diffusional Viscosity of a Polycrystalline Solid
TL;DR: In this article, it is suggested that mosaic boundaries and boundaries between grains of nearly the same orientation may not serve as sources or sinks of the diffusion currents, in which case the creep rate will depend only on the configuration of grain boundaries having a sizable orientation differen...