Influence of Microstructural Change on Damping Capacity of Mg-X%Li Alloys


Article Preview

The Effects of Li content and annealing treatment on microstructure and damping capacity for Mg-X%Li alloys have been investigated, based on experimental results from X-ray diffractometry (XRD), optical microscopy (OM), hardness tests and vibration damping tests in a flexural mode. The Mg-X%Li alloys containing Li of 3%, 8% and 13% consist of α (HCP) single phase, (α + β (BCC)) dual phases and β single phase, respectively. In as-rolled state, the damping capacity for Mg-Li alloys shows a similar level regardless of Li content. The annealing treatments at 200oC and 400οC give rise to an enhancement of damping capacity only for the Mg-3%Li and Mg-8%Li alloys containing α phase, and at the same annealing temperature, the Mg-3%Li alloy with fully α structure exhibits higher damping capacity. This result indicates that the damping capacity of Mg-Li alloys depends principally on α phase, and that the annealing treatment is necessary to improve its damping capacity.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran




J. H. Jun et al., "Influence of Microstructural Change on Damping Capacity of Mg-X%Li Alloys", Materials Science Forum, Vols. 539-543, pp. 1764-1768, 2007

Online since:

March 2007




[1] Magnesium Elektron Data Sheet 462 (ELEKTRON ZA).

[2] K. Sugimoto: Mem. Inst. Sci. Ind. Res. Osaka Univ. Vol. 35 (1978), p.31.

[3] H. Okamoto: Desk Handbook of Phase Diagrams for Binary Alloys (ASM International, USA 2000).

[4] L. Feng, B. Chen, P. Liu, T. Zhou and H. Li: Mater. Sci. Forum Vol. 488-489 (2005), p.239.

[5] G.Y. Sha, Y.B. Xu and E.H. Han: Mater. Sci. Forum Vol. 488-489 (2005), p.717.

[6] W. Tang, Y.B. Xu and E.H. Han: Mater. Sci. Forum Vol. 488-489 (2005), p.531.

[7] Z. Trojanova, Z. Drozd, P. Lukac and F. Chmelik: Mater. Sci. Eng. A410-A411 (2005), p.148.

[8] G.S. Song and M.V. Kval: Mater. Characterization Vol. 54 (2005), p.279.

[9] Z. Drozd, Z. Trojanova and S. Kudela: J. Alloy Comp. Vol. 378 (2004), p.192.

[10] J.H. Jun and C.S. Choi: Mater. Sci. Eng. Vol. A252 (1998), p.133.

[11] A. Granato and K. Lücke: J. Appl. Phys. Vol. 27 (1956), p.583.