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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
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Effect of equal channel angular pressing on the thermal-annealing-induced microstructure and texture evolution of cold-rolled copper
TL;DR: In this paper, the effect of equal channel angular pressing (ECAP) on the recrystallization-induced microstructure and texture evolution of cold-rolled (CR) pure copper was investigated.
Journal ArticleDOI
Anneal hardening of a nanostructured Cu–Al alloy processed by high-pressure torsion and rolling
Jingmei Tao,Guangming Chen,W. W. Jian,Jun Wang,Yuntian Zhu,Yuntian Zhu,Xinkun Zhu,Terence G. Langdon,Terence G. Langdon +8 more
TL;DR: In this article, it is proposed that the high densities of stacking faults and nonequilibrium grain boundaries, combined with the high residual shear stresses in the deformed samples, contribute to the development of nanoscale annealing twins during the recrystallization process.
Journal ArticleDOI
Strain rate dependence of compressive behavior in an Al-Zn-Mg alloy processed by ECAP
TL;DR: In this paper, the compressive mechanical properties of an Al-Zn-Mg alloy after solid solution treatment and equal-channel angular pressing (SS-ECAP) using strain rates ranging from 1.0 to 3.0 s−1.
Journal ArticleDOI
The effect of large plastic deformation on elevated temperature mechanical behavior of dynamic strain aging Al-Mg alloys
TL;DR: The tensile behavior at elevated temperature of heavily plastically deformed Al-Mg alloys with an Mg content of 1 to 5% was investigated in this article, where large plastic deformation was imposed by confined channel die pressing at room temperature up to 18 passes.
Journal ArticleDOI
Inhomogeneous microstructure and mechanical anisotropy of multi-directional forged Mg-Gd-Y-Zn-Ag-Zr alloy
TL;DR: In this paper, a bulky Mg-Gd-Y-Zn-Ag-Zr alloy with a size of 460mm was prepared through multi-directional forging with strain controlled multi-passes under the conditions of initial forging temperature of 480°C and an accumulative strain of 4.4 after 27 forging passes.
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...