INFLUENCE OF CERIUM CONTENT ON DAMPING CAPACITIES OF AS-SPRAY DEPOSITED HIGH SILICON ALLOY ZA27

来源期刊：中国有色金属学报(英文版)1997年第1期

论文作者：Liu Yongchang Lu Yili Yang Gencang Zhu Zhengang

文章页码：112 - 116

Key words：spray deposition; damping capacity ;cerium modification

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.