中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 7 No. 1 March 1997 |
（1.State Key Laboratory of Solidification Processing; Northwestern Polytechnic University; Xi’an 710072;
2.Laboratory of Internal Friction and Defects in Solids; Chinese Academy of Sciences; Hefei 230031）
Abstract:To improve the damping capacity of metals and alloys, the microstructures and damping capacities of as spray deposited high silicon alloy ZA27 modified by 0.3%, 0.5%, 0.7% cerium were studied. The microstructure of the alloy ZA27 is made up of fine lamellar eutectoid, porosity, light dot like phase and polygonal silicon rich phase. The damping capacities of the as spray deposited alloy ZA27 modified by 0.5% cerium were greatly improved. The high damping capacities attributed primarily to phase interface thermoelastic damping between the lamellar phases with various crystal substructures, except for porosities and fine grain boundaries.
Key words: spray deposition damping capacity cerium modification
