Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering

In this research, we successfully fabricate high-hardness and lightweight Al-Ti composites. Al-Ti composites powders with three compositions (Al-20, 50, and 80 vol.% Ti) are mixed using ball milling and subsequently subjected to spark plasma sintering (SPS). The microstructures and phases of the Al-...

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Autores principales: Park, Kwangjae, Kim, Dasom, Kim, Kyungju, Cho, Seungchan, Kwon, Hansang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6356306/
https://www.ncbi.nlm.nih.gov/pubmed/30669667
http://dx.doi.org/10.3390/ma12020331
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author Park, Kwangjae
Kim, Dasom
Kim, Kyungju
Cho, Seungchan
Kwon, Hansang
author_facet Park, Kwangjae
Kim, Dasom
Kim, Kyungju
Cho, Seungchan
Kwon, Hansang
author_sort Park, Kwangjae
collection PubMed
description In this research, we successfully fabricate high-hardness and lightweight Al-Ti composites. Al-Ti composites powders with three compositions (Al-20, 50, and 80 vol.% Ti) are mixed using ball milling and subsequently subjected to spark plasma sintering (SPS). The microstructures and phases of the Al-Ti composites are characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) spectroscopy, and field emission-electron probe microanalysis (FE-EPMA). These tests confirm the presence of several intermetallic compounds (ICs) (Al(3)Ti, Al(5)Ti(2), Al(11)Ti(5)) in the composites, and we are able to confirm that these ICs are produced by the reaction of Al and Ti during the SPS process. Furthermore, thermogravimetric-differential thermal analysis (TG-DTA) is used to analyze the formation behavior of the ICs. In addition, the mechanical properties of the composites are measured using their Vickers hardness and it is observed that the Al-80 vol.% Ti composite exhibits the highest hardness. Consequently, it is assumed that SPS is suitable for fabricating Al-Ti composites which represent the next-generation materials to be used in various industrial fields as high-hardness and lightweight materials.
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spelling pubmed-63563062019-02-04 Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering Park, Kwangjae Kim, Dasom Kim, Kyungju Cho, Seungchan Kwon, Hansang Materials (Basel) Article In this research, we successfully fabricate high-hardness and lightweight Al-Ti composites. Al-Ti composites powders with three compositions (Al-20, 50, and 80 vol.% Ti) are mixed using ball milling and subsequently subjected to spark plasma sintering (SPS). The microstructures and phases of the Al-Ti composites are characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) spectroscopy, and field emission-electron probe microanalysis (FE-EPMA). These tests confirm the presence of several intermetallic compounds (ICs) (Al(3)Ti, Al(5)Ti(2), Al(11)Ti(5)) in the composites, and we are able to confirm that these ICs are produced by the reaction of Al and Ti during the SPS process. Furthermore, thermogravimetric-differential thermal analysis (TG-DTA) is used to analyze the formation behavior of the ICs. In addition, the mechanical properties of the composites are measured using their Vickers hardness and it is observed that the Al-80 vol.% Ti composite exhibits the highest hardness. Consequently, it is assumed that SPS is suitable for fabricating Al-Ti composites which represent the next-generation materials to be used in various industrial fields as high-hardness and lightweight materials. MDPI 2019-01-21 /pmc/articles/PMC6356306/ /pubmed/30669667 http://dx.doi.org/10.3390/ma12020331 Text en © 2019 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
Park, Kwangjae
Kim, Dasom
Kim, Kyungju
Cho, Seungchan
Kwon, Hansang
Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering
title Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering
title_full Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering
title_fullStr Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering
title_full_unstemmed Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering
title_short Behavior of Intermetallic Compounds of Al-Ti Composite Manufactured by Spark Plasma Sintering
title_sort behavior of intermetallic compounds of al-ti composite manufactured by spark plasma sintering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6356306/
https://www.ncbi.nlm.nih.gov/pubmed/30669667
http://dx.doi.org/10.3390/ma12020331
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