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Damping Properties of Magnesium Alloy-S45 Composites with Varying Diameter of Specimen

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Abstract:

With the advancement of equipment and machinery in industrial activities, vibrations generated during operation can adversely affect machine performance. Therefore, in this study, a magnesium alloy was selected as a vibration damping material. A magnesium alloy containing 5 wt.% zinc was produced to enhance corrosion resistance and strength. Carbon steel (S45) was employed in the fabrication of magnesium alloy-based composites. For the optimization of the damping composite, holes with diameters of Ø6 and Ø8 mm were made in the center of the S45 cylindrical rods. The damping properties of the composites were evaluated by measuring the loss factor. Among the composites, the Ø6 specimen exhibited a significantly higher loss factor compared to the Ø8 specimen. This enhanced damping performance of the Ø6 composite is attributed to improved capillary pressure during the manufacturing process, which led to better infiltration, stronger interfacial bonding, and more effective energy dissipation mechanisms. At the contact interface of the Ø6 composite, intermetallic compounds such as MgZn2, Mg4Zn7, and Fe3Mg7Zn3 were observed. These compounds promote energy dissipation through mechanisms such as interfacial slip and microcrack arrest, thereby improving the loss factor.

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Periodical:

Materials Science Forum (Volume 1196)

Pages:

27-32

DOI:

https://doi.org/10.4028/p-nx26RB

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Online since:

June 2026

Authors:

Kwangmo Park*, Kenjiro Sugio, Gen Sasaki

Keywords:

Damping Properties, Magnesium, Magnesium Alloy-S45 Composite, Wettability, Zinc

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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