Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS2 through In-Situ Formation of Interfacial Al12Mo

In this work, few-layered MoS2 (FLM) nanosheet-reinforced Al matrix composites are developed through powder metallurgy and hot extrusion. The microstructure, mechanical properties, and strengthening mechanisms have been systematically investigated. It is found that Al<sub&g...

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Main Authors:	Lewen Fan, Lizhuang Yang, Dongdong Zhao, Liying Ma, Chunnian He, Fang He, Chunsheng Shi, Junwei Sha, Naiqin Zhao
Format:	Article
Language:	English
Published:	MDPI AG 2021-06-01
Series:	Materials
Subjects:	aluminum metal matrix composites (MMCs) MoS<sub>2</sub> nanosheets microstructure mechanical property strengthening mechanism
Online Access:	https://www.mdpi.com/1996-1944/14/13/3561

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spelling	doaj-32496c1d79664a04a483929a690b57f12021-07-15T15:40:32ZengMDPI AGMaterials1996-19442021-06-01143561356110.3390/ma14133561Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>MoLewen Fan0Lizhuang Yang1Dongdong Zhao2Liying Ma3Chunnian He4Fang He5Chunsheng Shi6Junwei Sha7Naiqin Zhao8School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaSchool of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin 300350, ChinaIn this work, few-layered MoS<sub>2</sub> (FLM) nanosheet-reinforced Al matrix composites are developed through powder metallurgy and hot extrusion. The microstructure, mechanical properties, and strengthening mechanisms have been systematically investigated. It is found that Al<sub>12</sub>Mo and Al<sub>2</sub>S<sub>3</sub> can be formed in-situ during the sintering process, resulting in the improvement of interfacial bonding between FLM and Al matrix. With 1.5 wt.% of FLM addition, an improved tensile strength of 234 MPa with a high elongation of 17% can be obtained. Moreover, the strengthening mechanisms are also demonstrated to be grain refinement, dislocation strengthening, and load transfer, and the calculation indicates that load transfer is the main contribution factor. This work will inspire more new designs of metal matrix composites with balanced strength and ductility.https://www.mdpi.com/1996-1944/14/13/3561aluminummetal matrix composites (MMCs)MoS<sub>2</sub> nanosheetsmicrostructuremechanical propertystrengthening mechanism
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Lewen Fan Lizhuang Yang Dongdong Zhao Liying Ma Chunnian He Fang He Chunsheng Shi Junwei Sha Naiqin Zhao
spellingShingle	Lewen Fan Lizhuang Yang Dongdong Zhao Liying Ma Chunnian He Fang He Chunsheng Shi Junwei Sha Naiqin Zhao Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>Mo Materials aluminum metal matrix composites (MMCs) MoS<sub>2</sub> nanosheets microstructure mechanical property strengthening mechanism
author_facet	Lewen Fan Lizhuang Yang Dongdong Zhao Liying Ma Chunnian He Fang He Chunsheng Shi Junwei Sha Naiqin Zhao
author_sort	Lewen Fan
title	Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>Mo
title_short	Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>Mo
title_full	Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>Mo
title_fullStr	Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>Mo
title_full_unstemmed	Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>Mo
title_sort	balancing strength and ductility in al matrix composites reinforced by few-layered mos<sub>2</sub> through in-situ formation of interfacial al<sub>12</sub>mo
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2021-06-01
description	In this work, few-layered MoS<sub>2</sub> (FLM) nanosheet-reinforced Al matrix composites are developed through powder metallurgy and hot extrusion. The microstructure, mechanical properties, and strengthening mechanisms have been systematically investigated. It is found that Al<sub>12</sub>Mo and Al<sub>2</sub>S<sub>3</sub> can be formed in-situ during the sintering process, resulting in the improvement of interfacial bonding between FLM and Al matrix. With 1.5 wt.% of FLM addition, an improved tensile strength of 234 MPa with a high elongation of 17% can be obtained. Moreover, the strengthening mechanisms are also demonstrated to be grain refinement, dislocation strengthening, and load transfer, and the calculation indicates that load transfer is the main contribution factor. This work will inspire more new designs of metal matrix composites with balanced strength and ductility.
topic	aluminum metal matrix composites (MMCs) MoS<sub>2</sub> nanosheets microstructure mechanical property strengthening mechanism
url	https://www.mdpi.com/1996-1944/14/13/3561
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_version_	1721298960029581312

Balancing Strength and Ductility in Al Matrix Composites Reinforced by Few-Layered MoS<sub>2</sub> through In-Situ Formation of Interfacial Al<sub>12</sub>Mo

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