Journal ArticleDOI
Direct observation of deformation-induced grain growth during the nanoindentation of ultrafine-grained Al at room temperature
TLDR
In this article, in situ nanoindentation within a transmission electron microscope was used to investigate the deformation mechanisms in ultrafine-grained Al films and the results suggest that grain growth and coalescence are important modes of response in deformation of ultrafine and nanograined materials.About:
This article is published in Acta Materialia.The article was published on 2004-10-18. It has received 341 citations till now. The article focuses on the topics: Grain boundary strengthening & Grain boundary.read more
Citations
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Journal ArticleDOI
Revealing Extraordinary Intrinsic Tensile Plasticity in Gradient Nano-Grained Copper
TL;DR: The extraordinary intrinsic plasticity of gradient NG structures offers their potential for use as advanced coatings of bulk materials in both high strength and ductility materials.
Journal ArticleDOI
Deformation twinning in nanocrystalline materials
TL;DR: In this paper, a review of deformation twinning in nanocrystalline materials is presented, including deformation twins observed by molecular dynamics simulations and experiments, twinning mechanisms, factors affecting the twinning, analytical models on the nucleation and growth of deformations, interactions between twins and dislocations, and the effects of twins on mechanical and other properties.
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Toward a quantitative understanding of mechanical behavior of nanocrystalline metals
TL;DR: A brief overview of the recent progress made in improving mechanical properties of nanocrystalline materials, and in quantitatively and mechanistically understanding the underlying mechanisms is presented in this paper.
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Ultra-strength materials
TL;DR: In this paper, an overview of the principal deformation mechanisms of ultra-strength materials is presented, and the fundamental defect processes that initiate and sustain plastic flow and fracture are described, as well as the mechanics and physics of both displacive and diffusive mechanisms.
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Stabilizing nanostructures in metals using grain and twin boundary architectures
TL;DR: In this article, the authors discuss recent developments in the stabilization of nanostructured metals by modifying the architectures of their interfaces, including high and low-angle grain boundaries, twin boundaries, nanotwinned and nanolaminated structures, and gradient nanostructure.
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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On the validity of the hall-petch relationship in nanocrystalline materials
TL;DR: In this paper, a study experimentale de la variation de la durete en fonction de la grosseur de grain for des materiaux nanocristallins is presented.
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Nanocrystalline diamond films1
TL;DR: In this paper, the synthesis of nanocrystalline diamond films from carbon-containing noble gas plasmas is described, which is the result of new growth and nucleation mechanisms, which involve the insertion of C2, carbon dimer, into carbon-carbon and carbon-hydrogen bonds, resulting in hetereogeneous nucleation rates on the order 1010 cm−2 s−1.
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Dislocation processes in the deformation of nanocrystalline aluminium by molecular-dynamics simulation.
TL;DR: It is demonstrated that, in contrast to coarse-grained Al, mechanical twinning may play an important role in the deformation behaviour of nanocrystalline Al, and large-scale molecular-dynamics simulations are used to elucidate this intricate interplay during room-temperature plastic deformation of model nanocrystaline Al microstructures.
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Deformation of electrodeposited nanocrystalline nickel
TL;DR: In this article, the mechanisms of deformation and damage evolution in electrodeposited, fully dense, nanocrystalline Ni with an average grain size of ~30 nm and a narrow grain size distribution were investigated by recourse to (i) tensile tests performed in situ in the transmission electron microscope and (ii) microscopic observations made at high resolution following ex situ deformation induced by compression, rolling and nanoindentation.