DAMPING CAPACITY OF HIGH SILICON ALLOY ZA27 PREPARED BY SPRM DEPOSITION
DAMPING CAPACITY OF HIGH SILICON ALLOY ZA27 PREPAREDBY SPRM DEPOSITION

The damping capacities (Q-1) of high silicon (6wt%) Zinc-27wt% Aluminia alloy prepared by spray deposition and conventional casting process were investigated. Three methods, free-decay, half-power band width and phase angles difference, have been ased to measure the damping capacities of the experimental materiale. The experimental results indicate that the damping capacity of spray deposited material is 3.7times larger than that of the conventional casting alloy ZA27 The machanism for its improvement was aiso investigated from a microstructvre viempoint.