Processing of Closed-Cell Magnesium Foams


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Lightweight metallic foams are an attractive material having excellent energy absorption and acoustic damping. The density of magnesium is the smallest among structural metallic materials, and is about two third of the density of aluminum. It is, however, difficult to produce magnesium foams by conventional process because of their chemical activity. This paper provides a novel manufacturing process of magnesium foams. Accumulative diffusion-bonding process can produce a magnesium matrix composite (preform) containing titanium hydride (TiH2) particles as a blowing agent. Foaming tests of three magnesium alloys, AZ31, AZ91 and ZA146, revealed that low solidus temperature is effective to produce fine cell morphology. Chemical composition is significantly important to optimize the cell morphology of magnesium foams.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

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




K. Kitazono et al., "Processing of Closed-Cell Magnesium Foams", Materials Science Forum, Vols. 539-543, pp. 1839-1844, 2007

Online since:

March 2007




[1] J. Banhart: Progress in Materials Science Vol. 46 (2001), p.559.

[2] T. Miyoshi, M. Itoh, S. Akiyama and A. Kitahara: Adv. Eng. Mater. Vol. 2 (2000), p.179.

[3] F. Baumgärtner, I. Duarte and J. Banhart: Adv. Eng. Mater. Vol. 2 (2000), p.168.

[4] K. Sugimoto, K. Niiya, T. Okamoto and K. Kishitake: Trans. JIM Vol. 18 (1977), P. 277.

[5] T. Mukai, H. Kanahashi, Y. Yamada, K. Shimojima, M. Mabuchi, T. G. Nieh and K. Higashi: Scripta mater. Vol. 41 (1999), p.365. Fig. 4 SEM micrographs of cell walls. (a) AZ31, (b) AZ91 and (c) ZA146 alloy foams.


[6] K. Shimojima, Y. Chino, Y. Yamada, C. Wen and M. Mabuchi: Mater. Trans. Vol. 42 (2001), p.1326.

[7] M. Tane, T. Ichitsubo, M. Hirao, T. Ikeda and H. Nakajima: J. Appl. Phys. Vol. 96 (2004), p.3696.

[8] L. Yuan, L. Yanxiang, W. Jiang and Z. Huawei: Mater. Sci. Eng. A402 (2005), p.47.

[9] K. Kitazono, E. Sato and K. Kuribayashi: Scripta mater. Vol. 50 (2004), p.495.

[10] K. Kitazono, S. Nishizawa, E. Sato and T. Motegi: Mater. Trans. Vol. 45 (2004), p.2389.

[11] Y. Saito, H. Utsunomiya, N. Tsuji and T. Sakai: Acta mater. Vol. 47 (1999), p.579.

[12] Y. Kikuchi, K. Kakehi, K. Kitazono, E. Sato and K. Kuribayashi: Mater. Sci. Forum Vol. 475-479 (2005), p.501.