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Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams

Metal matrix syntactic foams have been fabricated via counter-gravity infiltration of a packed bed of recycled expanded glass particles (EG) with A356 aluminum alloy. Particle shrinkage was studied and has been utilized to increase the particles’ strength and tailor the mechanical properties of the...

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Autores principales: Al-Sahlani, Kadhim, Taherishargh, Mehdi, Kisi, Erich, Fiedler, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5615727/
https://www.ncbi.nlm.nih.gov/pubmed/28902158
http://dx.doi.org/10.3390/ma10091073
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author Al-Sahlani, Kadhim
Taherishargh, Mehdi
Kisi, Erich
Fiedler, Thomas
author_facet Al-Sahlani, Kadhim
Taherishargh, Mehdi
Kisi, Erich
Fiedler, Thomas
author_sort Al-Sahlani, Kadhim
collection PubMed
description Metal matrix syntactic foams have been fabricated via counter-gravity infiltration of a packed bed of recycled expanded glass particles (EG) with A356 aluminum alloy. Particle shrinkage was studied and has been utilized to increase the particles’ strength and tailor the mechanical properties of the expanded glass/metal syntactic foam (EG-MSF). The crushing strength of particles could be doubled by shrinking them for 20 min at 700 °C. Owing to the low density of EG (0.20–0.26 g/cm(3)), the resulting foam exhibits a low density (1.03–1.19 g/cm(3)) that increases slightly due to particle shrinkage. Chemical and physical analyses of EG particles and the resulting foams were conducted. Furthermore, metal syntactic foam samples were tested in uni-axial compression tests. The stress-strain curves obtained exhibit three distinct regions: elastic deformation followed by a stress plateau and densification commencing at 70–80% macroscopic strain. Particle shrinkage increased the mechanical strength of the foam samples and their average plateau stress increased from 15.5 MPa to 26.7 MPa.
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spelling pubmed-56157272017-09-28 Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams Al-Sahlani, Kadhim Taherishargh, Mehdi Kisi, Erich Fiedler, Thomas Materials (Basel) Article Metal matrix syntactic foams have been fabricated via counter-gravity infiltration of a packed bed of recycled expanded glass particles (EG) with A356 aluminum alloy. Particle shrinkage was studied and has been utilized to increase the particles’ strength and tailor the mechanical properties of the expanded glass/metal syntactic foam (EG-MSF). The crushing strength of particles could be doubled by shrinking them for 20 min at 700 °C. Owing to the low density of EG (0.20–0.26 g/cm(3)), the resulting foam exhibits a low density (1.03–1.19 g/cm(3)) that increases slightly due to particle shrinkage. Chemical and physical analyses of EG particles and the resulting foams were conducted. Furthermore, metal syntactic foam samples were tested in uni-axial compression tests. The stress-strain curves obtained exhibit three distinct regions: elastic deformation followed by a stress plateau and densification commencing at 70–80% macroscopic strain. Particle shrinkage increased the mechanical strength of the foam samples and their average plateau stress increased from 15.5 MPa to 26.7 MPa. MDPI 2017-09-13 /pmc/articles/PMC5615727/ /pubmed/28902158 http://dx.doi.org/10.3390/ma10091073 Text en © 2017 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
Al-Sahlani, Kadhim
Taherishargh, Mehdi
Kisi, Erich
Fiedler, Thomas
Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams
title Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams
title_full Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams
title_fullStr Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams
title_full_unstemmed Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams
title_short Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams
title_sort controlled shrinkage of expanded glass particles in metal syntactic foams
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5615727/
https://www.ncbi.nlm.nih.gov/pubmed/28902158
http://dx.doi.org/10.3390/ma10091073
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