日本金属学会誌

J. Japan Inst. Met. Mater, Vol. 77, No. 10 (2013),
pp. 430-434

Compression Properties of Al/Al-Mg-Si/Al-Si-Cu Alloy Three-Layered Functionally Graded Aluminum Foam

Kousuke Saito1, Yoshihiko Hangai2, Takao Utsunomiya3, Osamu Kuwazuru4, Soichiro Kitahara5 and Nobuhiro Yoshikawa6

1Graduate School of Engineering, Gunma University, Kiryu 376-8515
2Faculty of Science and Technology, Gunma University, Kiryu 376-8515
3Research Organization for Advanced Engineering, Shibaura Institute of Technology, Saitama 337-8570
4Graduate School of Engineering, University of Fukui, Fukui 910-8507
5Hokudai Co., Ltd., Yuufutsu-gun, Hokkaido 059-1434
6Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505

Abstract:

Aluminum foam is a multifunctional material with a light weight and a high energy absorption. In this study, an A1050(pure Al)-A6061(Al-Mg-Si)-ADC12(Al-Si-Cu) aluminum alloy three-layered-structure functionally graded (FG) aluminum foam was fabricated by the friction stir welding (FSW) route. The pore structures and elemental Cu content of the fabricated A1050-A6061-ADC12 FG aluminum foam were observed nondestructively by X-ray CT inspection and Electron Probe Microanalysis (EPMA), respectively. It was shown that three-layered A1050-A6061-ADC12 FG aluminum foam can be fabricated with different pore structures and elemental Cu contents in each layer. The compression properties and deformation behavior of the A1050-A6061-ADC12 FG aluminum foam were obtained by a compression test. It was shown that the fabricated A1050-A6061-ADC12 FG aluminum foam exhibited three different deformation stages and three plateau regions corresponding to the pore structures and types of aluminum alloy in each layer. [doi:10.2320/jinstmet.JAW201309]


(Received 2013/4/23)

Keywords:

cellular materials, functionally graded materials, friction stir welding, X-ray computed tomography, die casting


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