论文信息 - Defect generation during solidification of aluminium foams

Defect generation during solidification of aluminium foams

The reason for the frequent occurrence of cell wall defects in metal foams was investigated. Aluminium foams often expand during solidification, a process which is referred as solidification expansion (SE). The effect of SE on the structure of aluminium foams was studied in situ by X-ray radioscopy and ex situ by X-ray tomography. A direct correlation between the magnitude of SE and the number of cell wall ruptures during SE and finally the number of defects in the solidified foams was found.

[1] A. Rack,et al. Synchrotron-based radioscopy employing spatio-temporal micro-resolution for studying fast phenomena in liquid metal foams , 2009, Journal of synchrotron radiation.

[2] U. Ramamurty,et al. Variability in mechanical properties of a metal foam , 2004 .

[3] Günter Gottstein,et al. Aluminium alloys : their physical and mechanical properties , 2008 .

[4] Robert F. Singer,et al. Metal foam stabilization by oxide network particles , 2005 .

[5] I. Jeon,et al. The effect of structural defects on the compressive behavior of closed-cell Al foam , 2005 .

[6] C. Körner. Foam formation mechanisms in particle suspensions applied to metal foams , 2008 .

[7] T. W. Clyne,et al. The effect of cell wall microstructure on the deformation and fracture of aluminium-based foams , 2001 .

[8] G. G. Stokes. "J." , 1890, The New Yale Book of Quotations.