Damping property of supersaturated ZnAl27Ce alloy during natural aging

The microstructures and damping property of supersaturated ZnAl27Ce alloy d uring natural aging have been investigated. H-800 TEM was mainly used to re search the microstructures. The relationship between microstructure and dam ping property was primarily studied. The results showed that solution plus natural aging was the best heat treatment, which could improve the damping property. Both continuous precipitation and cellular reaction occurred duri ng the aging. Continuous precipitation follows the sequence: beta-->spheric al GP zones-->elliptical GP zones-->intermediate phase R-->eta. The cellula r reaction can be written as follows: beta-->alpha+eta+epsilon.