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Open AccessArticle

Numerical Study of Variation of Mechanical Properties of a Binary Aluminum Alloy with Respect to Its Grain Shapes

1
Department of Mechanical Engineering, Laval University, Québec, QC, G1V 0A6, Canada
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Department of Mining, Metallurgy and Materials Engineering, Laval University, Québec, QC, G1V 0A6, Canada
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Author to whom correspondence should be addressed.
The original of this paper, Hamid Sharifi and Daniel Larouche “Effect of Grain Shapes of the Microstructure on the Mechanical Properties of the Binary Aluminium Alloy”, had been presented in the INALCO 2013 conference.
Materials 2014, 7(4), 3065-3083; https://doi.org/10.3390/ma7043065
Received: 28 February 2014 / Revised: 2 April 2014 / Accepted: 4 April 2014 / Published: 15 April 2014
To study the variation of the mechanical behavior of binary aluminum copper alloys with respect to their microstructure, a numerical simulation of their granular structure was carried out. The microstructures are created by a repeated inclusion of some predefined basic grain shapes into a representative volume element until reaching a given volume percentage of the α-phase. Depending on the grain orientations, the coalescence of the grains can be performed. Different granular microstructures are created by using different basic grain shapes. Selecting a suitable set of basic grain shapes, the modeled microstructure exhibits a realistic aluminum alloy microstructure which can be adapted to a particular cooling condition. Our granular models are automatically converted to a finite element model. The effect of grain shapes and sizes on the variation of elastic modulus and plasticity of such a heterogeneous domain was investigated. Our results show that for a given α-phase fraction having different grain shapes and sizes, the elastic moduli and yield stresses are almost the same but the ultimate stress and elongation are more affected. Besides, we realized that the distribution of the θ phases inside the α phases is more important than the grain shape itself. View Full-Text
Keywords: microstructure generation; multi-scale modeling; grain shapes; binary aluminum modeling; mechanical properties estimation microstructure generation; multi-scale modeling; grain shapes; binary aluminum modeling; mechanical properties estimation
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Sharifi, H.; Larouche, D. Numerical Study of Variation of Mechanical Properties of a Binary Aluminum Alloy with Respect to Its Grain Shapes. Materials 2014, 7, 3065-3083.

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