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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 6    December 2006

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Tensile property of Al-Si closed-cell aluminum foam
YU Hai-jun(尉海军), YAO Guang-chun(姚广春), LIU Yi-han(刘宜汉)

School of Materials and Metallurgy, Northeastern University, 
Shenyang 110004, China

Abstract: Al-Si closed-cell aluminum foams of different densities were prepared by molten body transitional foaming process. The tensile behavior of Al-Si closed-cell aluminum foam was studied and the influence of relative densities on the tensile strength and elastic modulus was also researched. The results show that the fracture surfaces of Al-Si closed-cell aluminum foam display quasi-cleavage fracture consisting of brittle cleavages and ductile dimples. The tensile strength and elastic modulus are strictly affected by the relative density of Al-Si closed-cell aluminum foam. With increasing relative density, the tensile strength increases and the strain at which the peak strength is measured also increases; in addition, the elastic modulus increases with increasing relative density.

 

Key words: Al-Si; aluminum foam; closed-cell; tensile property

ISSN 1672-7029
CN 43-1423/U

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