Preparation and characterization of the Al-Cu-Mg-Si-Mn composites reinforced by different surface modified SiCp

Journal Article · Sun Jul 15 04:00:00 EDT 2018 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2018.04.049· OSTI ID:22805048

Gao, Yu-Yang; Qiu, Feng; Geng, Run; Zhao, Wei-Xing ^[1]; Yang, De-Long ^[2]; Zuo, Rui; Dong, Bai-Xin ^[1]; Han, Xue ^[3]; Jiang, Qi-Chuan ^[1]

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1. Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Renmin Street NO. 5988, Changchun 130025, Jilin Province (China)
2. School of Mechanical Engineering, Anyang Institute of Technology, West of Huanghe Road, Wenfeng District, Anyang 455002, Henan Province (China)
3. Department of Mechanical Engineering, Oakland University, Rochester 48309, MI (United States)

Highlights: • The Ti-coated SiC{sub p} exhibited more uniformly distribution in composites than that of pre-oxidized SiC{sub p}. • Ti-coated SiC{sub p} obtained better SiC{sub p}-Al interface bonding than that of pre-oxidized SiC{sub p}. • The composites reinforced by Ti-coated SiC{sub p} exhibited better tensile properties than that reinforced by pre-oxidized SiC{sub p}. - Abstract: In this paper, the 4 vol% SiC{sub p}/Al-Cu-Mg-Si-Mn composites were prepared by method of stirring casting. The effects of SiC{sub p} surface modifications (oxidization and Ti-coating) and particle sizes (5 μm, 10 μm and 15 μm) on the microstructure and tensile properties of the composites were analyzed. The effects of SiC{sub p} sizes on the distribution of SiC{sub p} in the pre-oxidized SiC{sub p}/Al-Cu-Mg-Si-Mn composites were larger than those in Ti-coated SiC{sub p}/Al-Cu-Mg-Si-Mn composites. The Al-Cu-Mg-Si-Mn composites reinforced with Ti-coated SiC{sub p} exhibited more uniform SiC{sub p} distributions and higher tensile mechanical properties than those reinforced with the pre-oxidized SiC{sub p}. When the SiC{sub p} size was 15 μm, the Ti-coated SiC{sub p}/Al-Cu-Mg-Si-Mn composite showed the best yield strength (σ{sub 0.2}), ultimate tensile strength (σ{sub UTS}) and fracture strain (ε{sub f}) of 410 MPa, 548 MPa and 7.6% with the increase of 10.2%, 2.6% and 5.6% than that of reinforced by pre-oxidized SiC{sub p}. The more uniformly dispersed particles and better tensile properties of the Ti-coated SiC{sub p}/Al-Cu-Mg-Si-Mn composites could be attributed to the better wetting between Ti-coated SiC{sub p} and molten Al.

• OSTI ID: 22805048
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 141; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
COATINGS
COMPOSITE MATERIALS
COPPER COMPOUNDS
DISTRIBUTION
INTERMETALLIC COMPOUNDS
MAGNESIUM COMPOUNDS
MANGANESE COMPOUNDS
MICROSTRUCTURE
PRESSURE RANGE MEGA PA 100-1000
REINFORCED MATERIALS
SILICON CARBIDES
SILICON COMPOUNDS
SURFACES
TENSILE PROPERTIES
YIELD STRENGTH