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

Vol. 15    No. 5    October 2005

Numerical modeling of damping capacity of Zn-Al alloys with fully lamellar microstructures
WANG Jin-cheng(王锦程)1, ZHANG Zhong-ming(张忠明)2
YANG Gen-cang(杨根仓)1
(1. State Key Laboratory of Solidification Processing,  Northwestern Polytechnical University,  Xi’an 710072, China; 
2. Department of Materials Science and Engineering,  Xi’an University of Technology,  Xi’an 710048, China
)
Abstract:  The damping behaviors of Zn-Al alloys with fully lamellar microstructures were simulated with the cell method. The influences of the grain boundary condition, the strain amplitude, the number of the lamellae in the grain (N) and the content ratio of Zn and Al in Zn-Al alloys on the damping capacity were investigated. The results indicate that the grain boundary condition has great influence on the damping capacity of Zn-Al alloys, and also affects the relationship between the damping capacity and the number of lamellae (N). The variation of damping capacity with the strain amplitude is increasing exponentially with the strain amplitude and the damping capacity increases with the increasing of content of Zn.
Key words:  damping capacity; Zn-Al alloys; lamellar microstructures; cell method; numerical modeling
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)