Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 11 No. 3 June 2001|
possessing both high damping and good mechanical properties
（Department of Materials Engineering,
Luoyang Institute of Technology, Luoyang 471039, P.R.China）
Abstract: A new idea of design and manufacture of metal-based materials possessing both high damping and good mechanical properties was proposed. The key of the idea is the combination of fining restriction-damping structures, using all mechanisms and taking advantages of different materials. Based upon this idea a foam ZA27 was prepared by the technology of prefabricated salt-mass centrifugal seeping foundry, its tensile strength and compressive strength are 83～119 MPa and 100～189 MPa, respectively. The damping properties of the foam ZA27 increase remarkably after the carpenter pastern or rosin (the dampingincreased materials) was immerged into it, which approaches to the level of viscous-elastic polymer materials ( Q-1≥20×10-3 ).
Key words: foam metals； damping； mechanical properties； Zn-based alloys