Micromechanical Simulation of Fracture Behavior of Nanostructured Metals with Bimodal Grain Size Distribution

Guo, Xiang; Ji, R.; Weng, George J.; Zhu, Linli; Lü, Jian

doi:10.1016/j.mspro.2014.06.348

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…The modified mean field (M-T) was the basis for the development 15 of the micromechanical composite model (Weng 2011;Guo et al 2014). This model was used in estimating the overall stress and strain in bimodal LDPE bricks.…”

Section: Modelingmentioning

confidence: 99%

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Mechanical and Thermal Properties of Sustainable Composite Building Materials Produced by the Reprocessing of Low-Density Polyethylene, Biochar, Calcium Phosphate, and Phosphogypsum Wastes

Azeko

Arthur

Minh

et al. 2022

J. Mater. Civ. Eng.

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This paper presents the results of the experimental and analytical studies of the mechanical and thermal properties of laterite composites mixed with reprocessed low-density polyethylene waste (LDPE), calcium phosphate (CaP) and phosphogypsum wastes, and biochar to form brick composites. Bricks with mixtures of 20% by volume LDPE, 15% by volume CaP, and 15% by volume gypsum were shown to have excellent compressive strength, flexural strength, and fracture toughness. The composites with 1% by volume LDPE and 15% by volume biochar had the best blend of mechanical properties, such as flexural strength and fracture toughness, after sintering for ∼24 h. There was a linear association between the strength and the weight loss of the bricks. Scanning electron microscopy and optical microscopy images revealed evidence of crack bridging by LDPE particles. The laterite-LDPE composite mixed with 5%, 10%, and 15% by volume biochar had sintering temperatures of ∼850°C, ∼720°C, and ∼710°C, respectively, after undergoing softening, cold crystallization, and cooling.

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Section: Modelingmentioning

confidence: 99%

“…Suppose that there is a boundary displacement in the composite with a homogenous strain, ε; the hydrostatic and deviatoric strains of the constituent phases relationship are (Weng 2011;Guo et al 2014)…”

Section: Modelingmentioning

confidence: 99%

Mechanical and Thermal Properties of Sustainable Composite Building Materials Produced by the Reprocessing of Low-Density Polyethylene, Biochar, Calcium Phosphate, and Phosphogypsum Wastes

Azeko

Arthur

Minh

et al. 2022

J. Mater. Civ. Eng.

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show abstract

“…In order to better understand the microstructure topology driven characteristics of bimodal metals many researchers have turned to computationally based investigations. In a computational study Guo et al [17] showed the strengthening mechanisms for UFG-CG materials are CG bridging and crack deflection. Recognizing the microstructure topology is important, Guo et al [18] completed additional work, which examined six different idealized microstructures including two that included randomly distributed platelet type CGs.…”

Section: Modelling and Simulation In Materials Science And Engineeringmentioning

confidence: 99%

Yield stress of ultrafine-grained or nanocrystalline materials with a bimodal grain size distribution

Pande

DeGiorgi

Moser

2017

Modelling Simul. Mater. Sci. Eng.

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An attractive processing route for enhancing the yield strength of high-strength nanocrystalline metals and alloys while maintaining high ductility is to develop a bimodal grain size distribution (GSD), in which, supposedly, the finer grains provide strength, and the coarser grains maintain or even enhance ductility. We present a theoretical model predicting the strength of such a system, and show, analytically, how the yield stress is related to the various parameters of the bimodal GSD, such as volume fraction of the two components of the bimodal distribution and their standard deviations.

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The microbuckling failure of Dyneema ® composites under compression

Liu

Zhu

Huang

2017

Acta Mechanica Solida Sinica

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Micromechanical Simulation of Fracture Behavior of Nanostructured Metals with Bimodal Grain Size Distribution

Cited by 3 publications

References 10 publications

Mechanical and Thermal Properties of Sustainable Composite Building Materials Produced by the Reprocessing of Low-Density Polyethylene, Biochar, Calcium Phosphate, and Phosphogypsum Wastes

Mechanical and Thermal Properties of Sustainable Composite Building Materials Produced by the Reprocessing of Low-Density Polyethylene, Biochar, Calcium Phosphate, and Phosphogypsum Wastes

Yield stress of ultrafine-grained or nanocrystalline materials with a bimodal grain size distribution

The microbuckling failure of Dyneema ® composites under compression

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