Empirical Investigation of Properties for Additive Manufactured Aluminum Metal Matrix Composites

Bai, Shuang; Liu, Jian

doi:10.3390/applmech5030026

Empirical Investigation of Properties for Additive Manufactured Aluminum Metal Matrix Composites

Journal Article · Thu Jul 11 00:00:00 EDT 2024 · Applied Mechanics

DOI:https://doi.org/10.3390/applmech5030026· OSTI ID:2397367

Bai, Shuang ^[1]; Liu, Jian ^[1]

PolarOnyx, Inc., Chapel Hill, NC (United States)

Laser additive manufacturing with mixed powders of aluminum alloy and silicon carbide (SiC) or boron carbide (B₄C) is investigated in this experiment. With various mixing ratios of SiC/Al to form metal matrix composites (MMC), their mechanical and physical properties are empirically investigated. Parameters such as laser power, scan speed, scan pattern, and hatching space are optimized to obtain the highest density for each mixing ratio of SiC/Al. The mechanical and thermal properties are systematically investigated and compared with and without heat treatment. It shows that 2 wt% of SiC obtained the highest strength and Young’s modulus. Graded composite additive manufacturing (AM) of MMC is also fabricated and characterized. Various types of MMC devices, such as heat sink using graded SiC MMC and grid type three-dimensional (3D) neutron collimators using boron carbide (B₄C), were also fabricated to demonstrate their feasibility for applications.

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Research Organization:: PolarOnyx, Inc., Chapel Hill, NC (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Office of SBIR/STTR Programs (SBIR/STTR); USDOE

Grant/Contract Number:: SC0024742

OSTI ID:: 2397367

Alternate ID(s):: OSTI ID: 2472777

Journal Information:: Applied Mechanics, Vol. 5, Issue 3; ISSN 2673-3161

Publisher:: MDPICopyright Statement

Country of Publication:: United States

Language:: English

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