Factors Affecting the Damping Capacity of TiC Particle Reinforced Zinc-22 Aluminum Composites

Abstract

Damping behavior of eutectoid zinc-aluminum composites was studied in the 25 to 330°C temperature range using a low-frequency torsion pendulum. In this study the internal friction was affected by changes in microstructure and by the amount of cold work prior to testing. The highest damping was obtained for a composite with 15% titanium carbide (TiC) particles, a fine lamellar microstructure, and after being cold worked 20%. A high-temperature (HT) internal friction peak at a temperature just below the eutectoid transformation temperature was observed in the composite materials, and in the annealed base alloys cold worked prior to testing. The authors believe this HT peak is associated with recrystallization of the matrix prior to the eutectoid transformation.

Department(s)

Materials Science and Engineering

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1997 American Technical Publishers Ltd., All rights reserved.

Publication Date

01 Jan 1997

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