Overcoming brittleness of high volume fraction Al/SiCp composites by controlling interface characteristics

Taegyu Lee; Hobyung Chae; Sangmin Shin; Seungchan Cho; Sang Kwan Lee; Soo Yeol Lee; Ke An; Ho Jin Ryu

doi:10.1016/j.matdes.2022.111038

Overcoming brittleness of high volume fraction Al/SiCp composites by controlling interface characteristics

Taegyu Lee, Hobyung Chae, Sangmin Shin, Seungchan Cho, Sang Kwan Lee, Soo Yeol Lee, Ke An, Ho Jin Ryu

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Particle-reinforced metal matrix composites (MMCs) with high-volume-fraction of above 40% are highly attractive in the field of structural materials because they impart enhanced reinforcement properties to metals. However, high-volume-fraction MMCs are not widely used due to their brittleness. Therefore, overcoming the brittleness of the high-volume-fraction composites is the first step to disseminate the high-reinforcement-fraction composites. In this study, the interface bonding of 55 vol% Al/SiCp composites was strengthened by modifying the interface characteristics to achieve high plasticity of the high-volume-fraction composite. The interface bonding strengthening was conducted by thermal oxidation of SiCp reinforcement. The increased plasticity of the composites was observed as the 62.2% increased fracture strain in the compression test. The interface modification changed the crack path during a compression test from interface crack to reinforcement particle crack. To investigate the mechanism of interface modification, in-situ neutron diffraction experiments were performed under compression. When the plasticity is enhanced by the interface treatment, most fractures consist of reinforcement fractures rather than interface fractures. Therefore, it is confirmed that controlling the interface treatment is a key factor to improve the plasticity in high-volume-fraction composites. This work shed light on developing new composite material with high-volume-fraction reinforcement.

Original language	English
Article number	111038
Journal	Materials and Design
Volume	222
DOIs	https://doi.org/10.1016/j.matdes.2022.111038
State	Published - Oct 2022
Externally published	Yes

Funding

This work was supported by National Research Foundation of Korea (NRF, No. 2021R1A2C2014025, 2014M3C1A9060721, 2017K1A3A7A09016308, 2022M3H4A1A02076759 and 2020R1A5A6017701) grant funded by the Ministry of Science and ICT of Korea and a portion of this research used resources at the Spallation Neutron Source, a US DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. This work was supported by National Research Foundation of Korea (NRF, No. 2021R1A2C2014025, 2014M3C1A9060721, 2017K1A3A7A09016308, 2022M3H4A1A02076759 and 2020R1A5A6017701) grant funded by the Ministry of Science and ICT of Korea and a portion of this research used resources at the Spallation Neutron Source, a US DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
DOE Public Access Plan
United States Government
U.S. Department of Energy
Office of Science
Oak Ridge National Laboratory	DE-AC05-00OR22725
Ministry of Science, ICT and Future Planning
National Research Foundation of Korea	2014M3C1A9060721, 2020R1A5A6017701, 2017K1A3A7A09016308, 2021R1A2C2014025, 2022M3H4A1A02076759

Keywords

Ductilization
Interface modification
Mechanical behavior
Metal matrix composites (MMCs)
Neutron diffraction
Plasticity

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10.1016/j.matdes.2022.111038

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title = "Overcoming brittleness of high volume fraction Al/SiCp composites by controlling interface characteristics",

abstract = "Particle-reinforced metal matrix composites (MMCs) with high-volume-fraction of above 40% are highly attractive in the field of structural materials because they impart enhanced reinforcement properties to metals. However, high-volume-fraction MMCs are not widely used due to their brittleness. Therefore, overcoming the brittleness of the high-volume-fraction composites is the first step to disseminate the high-reinforcement-fraction composites. In this study, the interface bonding of 55 vol% Al/SiCp composites was strengthened by modifying the interface characteristics to achieve high plasticity of the high-volume-fraction composite. The interface bonding strengthening was conducted by thermal oxidation of SiCp reinforcement. The increased plasticity of the composites was observed as the 62.2% increased fracture strain in the compression test. The interface modification changed the crack path during a compression test from interface crack to reinforcement particle crack. To investigate the mechanism of interface modification, in-situ neutron diffraction experiments were performed under compression. When the plasticity is enhanced by the interface treatment, most fractures consist of reinforcement fractures rather than interface fractures. Therefore, it is confirmed that controlling the interface treatment is a key factor to improve the plasticity in high-volume-fraction composites. This work shed light on developing new composite material with high-volume-fraction reinforcement.",

keywords = "Ductilization, Interface modification, Mechanical behavior, Metal matrix composites (MMCs), Neutron diffraction, Plasticity",

author = "Taegyu Lee and Hobyung Chae and Sangmin Shin and Seungchan Cho and Lee, {Sang Kwan} and Lee, {Soo Yeol} and Ke An and Ryu, {Ho Jin}",

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year = "2022",

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doi = "10.1016/j.matdes.2022.111038",

language = "English",

volume = "222",

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AU - Lee, Taegyu

AU - Chae, Hobyung

AU - Shin, Sangmin

AU - Cho, Seungchan

AU - Lee, Sang Kwan

AU - Lee, Soo Yeol

AU - An, Ke

AU - Ryu, Ho Jin

PY - 2022/10

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N2 - Particle-reinforced metal matrix composites (MMCs) with high-volume-fraction of above 40% are highly attractive in the field of structural materials because they impart enhanced reinforcement properties to metals. However, high-volume-fraction MMCs are not widely used due to their brittleness. Therefore, overcoming the brittleness of the high-volume-fraction composites is the first step to disseminate the high-reinforcement-fraction composites. In this study, the interface bonding of 55 vol% Al/SiCp composites was strengthened by modifying the interface characteristics to achieve high plasticity of the high-volume-fraction composite. The interface bonding strengthening was conducted by thermal oxidation of SiCp reinforcement. The increased plasticity of the composites was observed as the 62.2% increased fracture strain in the compression test. The interface modification changed the crack path during a compression test from interface crack to reinforcement particle crack. To investigate the mechanism of interface modification, in-situ neutron diffraction experiments were performed under compression. When the plasticity is enhanced by the interface treatment, most fractures consist of reinforcement fractures rather than interface fractures. Therefore, it is confirmed that controlling the interface treatment is a key factor to improve the plasticity in high-volume-fraction composites. This work shed light on developing new composite material with high-volume-fraction reinforcement.

AB - Particle-reinforced metal matrix composites (MMCs) with high-volume-fraction of above 40% are highly attractive in the field of structural materials because they impart enhanced reinforcement properties to metals. However, high-volume-fraction MMCs are not widely used due to their brittleness. Therefore, overcoming the brittleness of the high-volume-fraction composites is the first step to disseminate the high-reinforcement-fraction composites. In this study, the interface bonding of 55 vol% Al/SiCp composites was strengthened by modifying the interface characteristics to achieve high plasticity of the high-volume-fraction composite. The interface bonding strengthening was conducted by thermal oxidation of SiCp reinforcement. The increased plasticity of the composites was observed as the 62.2% increased fracture strain in the compression test. The interface modification changed the crack path during a compression test from interface crack to reinforcement particle crack. To investigate the mechanism of interface modification, in-situ neutron diffraction experiments were performed under compression. When the plasticity is enhanced by the interface treatment, most fractures consist of reinforcement fractures rather than interface fractures. Therefore, it is confirmed that controlling the interface treatment is a key factor to improve the plasticity in high-volume-fraction composites. This work shed light on developing new composite material with high-volume-fraction reinforcement.

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KW - Interface modification

KW - Mechanical behavior

KW - Metal matrix composites (MMCs)

KW - Neutron diffraction

KW - Plasticity

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Overcoming brittleness of high volume fraction Al/SiCp composites by controlling interface characteristics

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