Predicting the size scaling in strength of nanolayered materials by a discrete slip crystal plasticity model

Chen, Tianju; Yuan, Rui; Beyerlein, Irene J.; Zhou, Caizhi

doi:10.1016/j.ijplas.2019.08.016

Cited by 44 publications

(8 citation statements)

References 78 publications

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“…Yet, the question of scaling remains, as many of the properties of nanolaminates would be best exploited in structures that are two to three orders of magnitude greater in size than a foil. [126], and (e) Comparison in Hall-Petch behavior between measurement and prediction [137].…”

Section: Nanolaminates: Processing and Propertiesmentioning

confidence: 99%

“…They showed that the Hall Petch scaling emerges when the interface dislocation density saturates. As an alternative explanation, Yuan et al [137] showed using a 3D crystal plasticity technique that the Hall-Petch scaling arises when the layer thickness is assumed to limit the sizes of dislocation sources in the grain boundaries, modeled as double-pinned dislocation segments (see Figure 5(e)).…”

Section: Nanolaminates: Processing and Propertiesmentioning

confidence: 99%

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Heterostructured materials: superior properties from hetero-zone interaction

Zhu

Ameyama

Anderson

et al. 2020

Materials Research Letters

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667

135

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Heterostructured materials are an emerging class of materials with superior performances that are unattainable by their conventional homogeneous counterparts. They consist of heterogeneous zones with dramatic (> 100%) variations in mechanical and/or physical properties. The interaction in these hetero-zones produces a synergistic effect where the integrated property exceeds the prediction by the rule-of-mixtures. The heterostructured materials field explores heterostructures to control defect distributions, long-range internal stresses, and nonlinear inter-zone interactions for unprecedented performances. This paper is aimed to provide perspectives on this novel field, describe the state-of-the-art of heterostructured materials, and identify and discuss key issues that deserve additional studies. IMPACT STATEMENT This paper delineates heterostructured materials, which are emerging as a new class of materials with unprecedented properties, new materials science and economic industrial production.

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Section: Nanolaminates: Processing and Propertiesmentioning

confidence: 99%

Section: Nanolaminates: Processing and Propertiesmentioning

confidence: 99%

Heterostructured materials: superior properties from hetero-zone interaction

Zhu

Ameyama

Anderson

et al. 2020

Materials Research Letters

Self Cite

667

135

View full text Add to dashboard Cite

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“…Such composites have one crucial disadvantage-anisotropy of the mechanical properties. [13,14] In comparison, composite, based on CG, network can be fabricated as isotropic media, [15] which provides a better mechanical response. In such structures, graphene flakes (GFs) can be considered as an intact network which leads to the increase in shear stress.…”

Section: Introductionmentioning

confidence: 99%

Ni–Graphene Composite Obtained by Pressure–Temperature Treatment: Atomistic Simulations

Safina

Baimova

Krylova

et al. 2021

Physica Rapid Research Ltrs

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The incorporation of metal nanoparticles into novel carbon structures, such as crumpled graphene (CG), is a promising way to obtain a composite with better mechanical properties. Molecular dynamics simulation is used to investigate the deformation behavior of Ni–graphene composites, obtained by high‐temperature treatment, under uniaxial tension. The effect of temperatures between 1000 and 2000 K as well as the effect of nanoparticle size and anisotropy of the structure on the mechanical properties of the composite are studied. It is found that temperature from 1000 to 2000 K slightly affects the process of composite formation under hydrostatic compression. During the elastic regime of tension of the composite, the same values of Young's modulus are found for structures obtained at different temperatures. However, the ratio of nickel and carbon atoms considerably affects the mechanical properties under uniaxial tension: the less the number of Ni atoms, the higher the composite strength. Two of the three considered morphologies demonstrate close Young modulus and high strength. It is shown that the important advantage of the proposed structure is its homogeneity, which results in almost isotropic deformation. The obtained results open new prospects in using CG for composite fabrication.

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“…In addition, we found that the reduced elastic modulus and hardness along TD were always higher than those of RD for indentation depths of 200, 300 and 400 nm. Furthermore, the average hardness along RD was lower than that along TD, which is reliable considering the lesser yield strength measured along RD as compared to TD [ 76 , 77 ].…”

Section: Resultsmentioning

confidence: 81%

Crystallographic Anisotropy Dependence of Interfacial Sliding Phenomenon in a Cu(16)/Nb(16) ARB (Accumulated Rolling Bonding) Nanolaminate

et al. 2022

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Nanolaminates are extensively studied due to their unique properties, such as impact resistance, high fracture toughness, high strength, and resistance to radiation damage. Varieties of nanolaminates are being fabricated to achieve high strength and fracture toughness. In this study, one such nanolaminate fabricated through accumulative roll bonding (Cu(16)/Nb(16) ARB nanolaminate, where 16 nm is the layer thickness) was used as a test material. Cu(16)/Nb(16) ARB nanolaminate exhibits crystallographic anisotropy due to the existence of distinct interfaces along the rolling direction (RD) and the transverse direction (TD). Nanoindentation was executed using a Berkovich tip, with the main axis oriented either along TD or RD of the Cu(16)/Nb(16) ARB nanolaminate. Subsequently, height profiles were obtained along the main axis of the Berkovich indent for both TD and RD using scanning probe microscopy (SPM), which was later used to estimate the pile-up along the RD and TD. The TD exhibited more pile-up than the RD due to the anisotropy of the Cu(16)/Nb(16) ARB interface and the material plasticity along the TD and RD. An axisymmetric 2D finite element analysis (FEA) was also performed to compare/validate nanoindentation data, such as load vs. displacement curves and pile-up. The FEA simulated load vs. displacement curves matched relatively well with the experimentally generated load–displacement curves, while qualitative agreement was found between the simulated pile-up data and the experimentally obtained pile-up data. The authors believe that pile-up characterization during indentation is of great importance to documenting anisotropy in nanolaminates.

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Predicting the size scaling in strength of nanolayered materials by a discrete slip crystal plasticity model

Cited by 44 publications

References 78 publications

Heterostructured materials: superior properties from hetero-zone interaction

Heterostructured materials: superior properties from hetero-zone interaction

Ni–Graphene Composite Obtained by Pressure–Temperature Treatment: Atomistic Simulations

Crystallographic Anisotropy Dependence of Interfacial Sliding Phenomenon in a Cu(16)/Nb(16) ARB (Accumulated Rolling Bonding) Nanolaminate

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