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
Citations
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Introducing dislocation climb by bulk diffusion in discrete dislocation dynamics
TL;DR: In this paper, a method to incorporate dislocation climb controlled by bulk diffusion in a three-dimensional discrete dislocation dynamics (DDD) simulation for fcc metals is presented. But the model is not suitable for climbing-related phenomena.
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Quasi-periodic events in crystal plasticity and the self-organized avalanche oscillator.
Stefanos Papanikolaou,Dennis M. Dimiduk,Woosong Choi,James P. Sethna,Michael D. Uchic,Christopher Woodward,Stefano Zapperi +6 more
TL;DR: An experimental investigation of slowly compressed nickel microcrystals, covering three orders of magnitude in nominal strain rate, is reported, in which unconventional quasi-periodic avalanche bursts and higher critical exponents are observed as the strain rate is decreased.
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Discussion of the dependence of the effect of size on the yield stress in hard materials studied by microcompression of MgO
S. Korte,William Clegg +1 more
TL;DR: In this paper, the authors used the yield stress of a material to estimate the effect of size effects on the slip system in MgO and found that both the hard and soft slip system can be characterised individually.
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Hydrogen-enhanced local plasticity in aluminum: an ab initio study.
TL;DR: Dislocation core properties of Al with and without H impurities are studied using the Peierls-Nabarro model and it is found that H not only facilitates dislocation emission from the crack tip but also enhances dislocation mobility dramatically, leading to macroscopically softening and thinning of the material ahead of the crack Tip.
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Force-matched embedded-atom method potential for niobium
TL;DR: In this article, an embedded-atom method potential for niobium was constructed as the first step in alloy potential development, which accurately describes properties related to the fitting data, and also produces excellent results for quantities outside the fitting range.
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...