Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 7    No. 1    March 1997

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INFLUENCE OF CERIUM CONTENT ON DAMPING CAPACITIES OF AS-SPRAY DEPOSITED HIGH SILICON ALLOY ZA27
Liu Yongchang1; Lu Yili1; Yang Gencang1; Zhu Zhengang2

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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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