Journal ArticleDOI
Detwinning mechanisms for growth twins in face-centered cubic metals
TLDR
In this article, the detwinning process is accomplished via the collective glide of multiple twinning dislocations that form an ITB, and detwinning can easily occur for thin twins, and the driving force is mainly attributed to a variation of the excess energy of a coherent twin boundary.About:
This article is published in Acta Materialia.The article was published on 2010-04-01. It has received 461 citations till now. The article focuses on the topics: Crystal twinning.read more
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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.
Journal ArticleDOI
Review on superior strength and enhanced ductility of metallic nanomaterials
TL;DR: In this article, the authors present an overview of experimental data and theoretical concepts addressing the unique combination of superior strength and enhanced ductility of metallic nanomaterials, and consider the basic approaches and methods for simultaneously optimizing their strength and ductility, employing principal deformation mechanisms, crystallographic texture, chemical composition as well as second-phase nano-precipitates, carbon nanotubes and graphene.
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Extra strengthening and work hardening in gradient nanotwinned metals.
TL;DR: This work indicates that simultaneous enhancement in strength and work hardening can be achieved by solely increasing the structural gradient in pure Cu, and provides insights into combining structural gradients at different length scales in order to push forward the strength limit of materials.
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An overview of interface-dominated deformation mechanisms in metallic multilayers
Jian Wang,Amit Misra +1 more
TL;DR: In this paper, the authors show that the atomic structure of the interface leads to low interface shear strength in non-coherent fcc-bcc nanolayered composites such as Cu-Nb.
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Structural evolutions of metallic materials processed by severe plastic deformation
TL;DR: In this paper, a comprehensive review on important micro-structural evolutions and major microstructural features induced by SPD processing in single-phase metallic materials with face-centered cubic structures, body-centered cylindrical structures, and hexagonal close-packed structures, as well as in multi-phase alloys is provided.
References
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Book
Theory of Dislocations
John Price Hirth,Jens Lothe +1 more
TL;DR: Dislocations in Isotropic Continua: Effects of Crystal Structure on Dislocations and Dislocation-Point-Defect Interactions at Finite temperatures.
Journal ArticleDOI
Ultrahigh strength and high electrical conductivity in copper
TL;DR: Pure copper samples with a high density of nanoscale growth twins are synthesized and show a tensile strength about 10 times higher than that of conventional coarse-grained copper, while retaining an electrical conductivity comparable to that of pure copper.
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Structural stability and lattice defects in copper: Ab initio , tight-binding, and embedded-atom calculations
TL;DR: In this article, the ability of the embedded-atom method (EAM) and the tight-binding (TB) method to predict reliably energies and stability of nonequilibrium structures by taking Cu as a model material was evaluated.
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Revealing the Maximum Strength in Nanotwinned Copper
TL;DR: The maximum strength of nanotwinned copper samples with different twin thicknesses is investigated, finding that the strength increases with decreasing twin thickness, reaching a maximum at 15 nanometers, followed by a softening at smaller values that is accompanied by enhanced strain hardening and tensile ductility.
Journal ArticleDOI
Interatomic potentials for monoatomic metals from experimental data and ab initio calculations
TL;DR: In this article, an approach to the development of many-body interatomic potentials for monoatomic metals with improved accuracy and reliability is presented. But the functional form of the potentials is that of the embedded-atom method, but the interesting features are as follows: (1) the database used for the development a potential includes both experimental data and a large set of energies of different alternative crystalline structures of the material generated by ab initio calculations.