Application to Seismic Dampers in High-Strain-Rate Superplastic Zn-Al Alloy


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High strain rate superplasticity has been realised at room temperature for the first time with a ultra fine grained Zn-22wt%Al alloy. Zn-Al alloys have some advantages over low-yieldpoint steels in their low work-hardening rate and high ductility. In addition, Zn-Al alloys are environment-conscious because of no harmful metal like Pb. However, when Zn-Al alloys are subjected to plastic deformation, the strain is localised and local fracture can take place because of their low work-hardening property. In this study, a seismic damper was designed with a Ultra fine grained Zn-Al alloy. As a result, an ecological and high performance seismic damper, the so-called “maintenance-free seismic damper”, has been successfully developed.



Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie




A. Kushibe et al., "Application to Seismic Dampers in High-Strain-Rate Superplastic Zn-Al Alloy", Materials Science Forum, Vols. 475-479, pp. 3055-3060, 2005

Online since:

January 2005




[1] Somekawa et al. : Proceedings of Architectural Institute of Japan , Vol. 3 (1999), pp.871-872.

[2] Iwata et al.: Proceedings of Architectural Institute of Japan, Vol. 3 (1999), pp.937-938.

[3] K. Tanaka et al.: Journal of Struct Constr. Eng. , NO. 509 , (1998)pp.159-164.

[4] K. Ohi et al.: Journal of Struct Constr. Eng. , NO. 538 , Dec. 2000 p.171.

[5] Y. Nakata et al.: Symposium Proceedings of Passive Controlled Structure(2001) , pp.87-100.

[6] Y. Motohashi et al.: Journal of Japan Institute of Light Metals, Vol. 30, No. 11 (1980), p.634.

[7] R. S. Mishra et al.: Nano-structure Mat. Vol. 9, No. 1/8 (1997), p.473.

[8] M. Furukawa et al.: Mat. Res., Vol. 11, No. 9 (1996), p.2128.

[9] G. Toress-Villasenor et al. : Mat. Sci. Forum, Vol. 243/245 (1997), p.553.

[10] H. Ueda et al.: Journal of JSME C, Vol. 68, No. 672(2002), p.2332-p.2338.

[11] T. Tanaka et al.: International Journal of Mechanical Sciences 45 (2003).