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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Fatigue Damage Mechanism of AL6XN Austenitic Stainless Steel at High Temperatures
TL;DR: In this paper, a combination of transmission electron microscope, neutron diffraction and small-angle neutron scattering methods was used to investigate the fatigue behavior of AL6XN austenitic stainless steel in the temperature range of 400-600 °C.
Computer simulation of the dislocation ensemble kinetics in the elastic fields of mesodefects and fragmentation processes during plastic deformation
TL;DR: In this article, the analysis of the elementary processes of fragmentation (broken sub-boundaries and a misorientation band formation) is performed by the discrete dislocation computer simulation method, and it is shown that a fragmentation driving force is a decrease of the system energy due to the dislocations redistribution in the elastic field of primary mesodefects (disclinations, dipoles of disclinations, etc.).
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Microstructural Modeling of the Mechanical Behavior of Face-Centered Cubic Nanocrystalline-Twinned Systems
TL;DR: In this article, a dislocation density-based multiple-slip crystalline constitutive and a nonlinear finite element formulation have been used to understand how twin volume fractions, grain and twin orientations and texture, dislocation-density accumulation, and large inelastic strains affect the competing effects of strengthening and toughening mechanisms in nanotwinned materials.
Posted Content
Interpretation of the apparent activation energy of glass transition
TL;DR: In this article, a reasonable interpretation of the apparent activation energy is demonstrated along similar lines as those adopted in solid-state physics and chemistry, and it is shown that the actual energy barrier is significantly smaller than the apparent energy, and importantly, the values obtained were in the reasonable range of energy expected for chemical bonds.
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...