Dislocations in solids
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This article is published in Acta Crystallographica Section A.The article was published on 1989-07-01 and is currently open access. It has received 345 citations till now.read more
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Effect of Eshelby twist on core structure of screw dislocations in molybdenum: atomic structure and electron microscope image simulations
Roman Gröger,K. J. Dudeck,Peter D. Nellist,Vaclav Vitek,Peter Bernhard Hirsch,D. J. H. Cockayne +5 more
TL;DR: In this paper, the core structure of screw dislocations in elastically anisotropic Mo in the bulk can be obtained from high-resolution electron microscopy (HREM) images viewed end-on in a thin foil.
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A study of the accommodation of coherency strain by interfacial defects at a grain boundary in gold
TL;DR: In this paper, the structure of a ⟨ 110 ⟩ 90° grain boundary in Au is investigated using high-resolution transmission electron microscopy (HRTEM) and atomistic simulation.
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Kinetic Monte Carlo approach to modeling dislocation mobility
TL;DR: In this paper, a kinetic Monte Carlo (kMC) approach is used to model the kink nucleation and migration of screw dislocation in BCC metals, and the authors find that the accuracy of the model predictions cannot claim to be quantitative because of uncertainties in the atomistic results for kink energetics.
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Stable Defects in Semiconductor Nanowires.
TL;DR: Study of individual nanowires using cathodoluminescence show that optical emission is quenched in defective regions, showing that they act as strong nonradiative recombination centers.
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Non-singular descriptions of dislocation cores: a hybrid ab initio continuum approach
TL;DR: In this article, a hybrid approach that links the parametric dislocation dynamics method with ab initio calculations is presented, which is an extension of the Peierls-Nabarro (PN) model, with the following features: (1) all three components of the displacement vector for atoms within the dislocation core are included; (2) the entire generalized stacking fault energy surface (GSFS) obtained from ab-initio calculations; and (3) the method is generalized to treat curved dislocations.
References
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The conflicts between strength and toughness
TL;DR: This work focuses on the interplay between the mechanisms that individually contribute to strength and toughness, noting that these phenomena can originate from very different lengthscales in a material's structural architecture.
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Strong crystal size effect on deformation twinning
TL;DR: A ‘stimulated slip’ model is developed to explain the strong size dependence of deformation twinning in crystals, and the sample size in transition is relatively large and easily accessible in experiments, making the understanding of size dependence relevant for applications.
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Atomistic modeling of interfaces and their impact on microstructure and properties
Yuri Mishin,Mark Asta,Ju Li +2 more
TL;DR: An overview of the most recent developments in the area of atomistic modeling with emphasis on interfaces and their impact on microstructure and properties of materials is given in this paper, along with some challenges and future research directions in this field.
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A review on fundamental of high entropy alloys with promising high–temperature properties
TL;DR: In this paper, the microstructures of HESAs consisting of γ and γ′ phases are similar to that of Ni-base superalloys and refractory HEAs.
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Heterostructured materials: superior properties from hetero-zone interaction
Yuntian Zhu,Kei Ameyama,Peter M. Anderson,Irene J. Beyerlein,Huajian Gao,Hyoung Seop Kim,Enrique J. Lavernia,Suveen N. Mathaudhu,Haël Mughrabi,Robert O. Ritchie,Nobuhiro Tsuji,Xiangyi Zhang,Xiaolei Wu +12 more
Abstract: Heterostructured materials are an emerging class of materials with superior performances that are unattainable by their conventional homogeneous counterparts. They consist of heterogeneous zones wi...