About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
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Additive Manufacturing, Directed Energy Deposition of Metals: Processing – Microstructure – Mechanical Property Relationships
|
| Presentation Title |
Microstructures and tensile properties of BN-Reinforced Aluminum Composites manufactured by directed energy deposition |
| Author(s) |
SUMIN KIM, Yoon Suk Choi, Tae Yang Bang, JaeHyeong Kim, HaeJu Jo, WookJin Lee |
| On-Site Speaker (Planned) |
SUMIN KIM |
| Abstract Scope |
This study investigates the influence of BN ceramic powder addition on the additive manufacturing performance of AlSi10Mg alloy using the Directed Energy Deposition (DED) process. BN-reinforced composite powders were synthesized via stir casting followed by gas atomization and deposited under identical DED conditions alongside unreinforced AlSi10Mg for comparison. Microstructural and mechanical characteristics were evaluated through OM, SEM, EDS, TEM, EBSD, tensile testing, and finite element analysis (FEA). As a result, the BN-reinforced composites exhibited increased tensile strength and elongation. The solidification microstructure transformed from columnar to equiaxed cells, accompanied by a notable reduction in grain size. These findings suggest that the incorporation of BN ceramic reinforcements effectively promotes microstructural homogeneity, thereby enhancing the build quality and overall performance of aluminum matrix composites in additive manufacturing. |