Metallurgical Transactions A

, Volume 22, Issue 3, pp 617–622 | Cite as

Characterization of the damping properties of die-cast zinc-aluminum alloys

  • I. G. Ritchie
  • Z -L. Pan
  • F. E. Goodwin
Symposium on Acoustic/Vibration Damping Materials

Abstract

Characterization of the mechanical damping properties of a series of die-cast zinc-aluminum alloys is described. Over the range of variables (temperature, frequency, and vibration strain amplitude) normally encountered in service applications, it is shown that the damping consists of two components. Both components are due to linear relaxation mechanisms: the first is a thermoelastic relaxation and the second is the low-temperature tail of a broadened boundary relaxation. Some of the alloys exhibit elevated damping levels over a useful frequency range, particularly at the temperatures encountered in under-hood applications in automobiles.

Keywords

Metallurgical Transaction Gray Cast Iron Boundary Relaxation Thermoelastic Data International Lead Zinc Research Organization 
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Copyright information

© The Minerals, Metals and Materials Society, and ASM International 1991

Authors and Affiliations

  • I. G. Ritchie
    • 1
  • Z -L. Pan
    • 1
  • F. E. Goodwin
    • 2
  1. 1.Whiteshell LaboratoriesAECL ResearchPinawaCanada
  2. 2.Materials Sciences, International Lead Zinc Research OrganizationResearch Triangle Park

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