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Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions

Metallic foams find their applicability in complex systems that operate under both real-life conditions (Earth living conditions) and extreme temperature conditions (low or high temperatures). In this paper, the main mechanical properties of closed-cell aluminum alloy (A356) foams under quasi-static...

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Autores principales: Khezrzadeh, Omid, Mirzaee, Omid, Emadoddin, Esmaeil, Linul, Emanoil
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7288321/
https://www.ncbi.nlm.nih.gov/pubmed/32438755
http://dx.doi.org/10.3390/ma13102329
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author Khezrzadeh, Omid
Mirzaee, Omid
Emadoddin, Esmaeil
Linul, Emanoil
author_facet Khezrzadeh, Omid
Mirzaee, Omid
Emadoddin, Esmaeil
Linul, Emanoil
author_sort Khezrzadeh, Omid
collection PubMed
description Metallic foams find their applicability in complex systems that operate under both real-life conditions (Earth living conditions) and extreme temperature conditions (low or high temperatures). In this paper, the main mechanical properties of closed-cell aluminum alloy (A356) foams under quasi-static compression loading conditions were determined. In order to investigate the compressive behavior, three orthogonal directions (X, Y, and Z) and three testing temperatures (−196, 25 and 250 °C) were considered. It has been observed that the temperature significantly influences the strength properties and energy absorption performances of the aluminum metallic foams AMFs. Moreover, it was found that microstructural characteristics, such as intrinsic defects (intracellular cavities, micro-pores and thin cell-walls) and structural anisotropy (shape, size and orientation of cells), play a decisive role in the mechanical behavior of AMFs. Moreover, the paper compares the relative percentage change (relative percentage increase and decrease) of the main normalized compressive properties (yield stress, plateau stress, densification stress and the energy absorption) of AMF samples, according to testing temperature and loading direction.
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spelling pubmed-72883212020-06-17 Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions Khezrzadeh, Omid Mirzaee, Omid Emadoddin, Esmaeil Linul, Emanoil Materials (Basel) Article Metallic foams find their applicability in complex systems that operate under both real-life conditions (Earth living conditions) and extreme temperature conditions (low or high temperatures). In this paper, the main mechanical properties of closed-cell aluminum alloy (A356) foams under quasi-static compression loading conditions were determined. In order to investigate the compressive behavior, three orthogonal directions (X, Y, and Z) and three testing temperatures (−196, 25 and 250 °C) were considered. It has been observed that the temperature significantly influences the strength properties and energy absorption performances of the aluminum metallic foams AMFs. Moreover, it was found that microstructural characteristics, such as intrinsic defects (intracellular cavities, micro-pores and thin cell-walls) and structural anisotropy (shape, size and orientation of cells), play a decisive role in the mechanical behavior of AMFs. Moreover, the paper compares the relative percentage change (relative percentage increase and decrease) of the main normalized compressive properties (yield stress, plateau stress, densification stress and the energy absorption) of AMF samples, according to testing temperature and loading direction. MDPI 2020-05-19 /pmc/articles/PMC7288321/ /pubmed/32438755 http://dx.doi.org/10.3390/ma13102329 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khezrzadeh, Omid
Mirzaee, Omid
Emadoddin, Esmaeil
Linul, Emanoil
Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions
title Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions
title_full Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions
title_fullStr Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions
title_full_unstemmed Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions
title_short Anisotropic Compressive Behavior of Metallic Foams under Extreme Temperature Conditions
title_sort anisotropic compressive behavior of metallic foams under extreme temperature conditions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7288321/
https://www.ncbi.nlm.nih.gov/pubmed/32438755
http://dx.doi.org/10.3390/ma13102329
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