Strength and Fracture of Aluminium Alloys


Article Preview

Synchrotron X-ray microtomography has been utilized for the 3D characterisation of microstructure of aluminium foams. A combination of phase contrast imaging technique and several application techniques, such as local area tomography, microstructural gauging and in-situ observation, has enabled the assessment of microstructural effects on compressive deformation behaviours. It has been clarified that ductile buckling of a cell wall occurs regardless of any of the above microstructural factors in the case of a pure aluminium foam, while rather brittle fracture of a cell wall is induced by the existence of coarse micro-pores independently of the intermetallic particles and the grain boundary in the case of Al-Zn-Mg alloy foams. When cooling rate during foaming is high, however, lower energy absorption might be attributable to the significant amount of residual foaming agent particle and its inhomogeneous distribution. These tendencies are also confirmed by 3D strain mapping by tracking internal microstructural features.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

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




T. Kobayashi and H. Toda, "Strength and Fracture of Aluminium Alloys", Materials Science Forum, Vols. 539-543, pp. 127-134, 2007

Online since:

March 2007




[1] M.F. Ashby, A. Evans, N.A. Fleck, L.J. Gibson, J.W. Hutchinson and H.N.G. Wadley: Metal foams (Butterwirth-Heinemann, Woburn, MA, 2000).

[2] L.J. Gibson and M.F. Ashby: Cellular Solids (Pergamon Press, Oxford, UK, 1988).

[3] E. Maire, A. Fazekas, L. Salvo, R. Dendievel, S. Youssef, P. Cloetens, J.M. Letang: Composites Science and Technology (2003), p.2431.

[4] T.G. Nieh, K. Higashi and J. Wadsworth: Mater. Sci. Engng. A283(2000), p.105.

[5] Y. Sugimura, J. Meyer, M.Y. He, H. Bart-Smith, J. Grenestedt and A.G. Evans: Acta Mater. 45(1997), p.5245.

[6] R. Gradinger and F.G. Rammerstorfer: Acta Mater. 47(1999), p.143.

[7] NEDO, Interim Report of the NEDO project Production & Fabrication Technology Development of Aluminium useful for Automobile Lightweighting, (NEDO, Kawasaki, Japan, 2004, to be published).

[8] C.S. Marchi, J. -F. Despois and A. Mortensen: Acta Mater. 52(2004), p.2895.

[9] A. Faridani, K.A. Buglione, P. Huabsomboon, O.D. Iancu and J. McGrath: Contemporary Math. 278(2001), p.1.

[10] H. Toda, I. Sinclair, J. -Y. Buffière, E. Maire, T. Connolley, M. Joyce, K.H. Khor, P.J. Gregson: Phil. Mag. A 83(2003), p.2429.

[11] H. Toda, I. Sinclair, J. -Y. Buffière, E. Maire, K.H. Khor, P. Gregson and T. Kobayashi: Acta Mater. 52(2004), p.1305.

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