Filling of Surface Pores on Aluminum Foam with Aluminum Powder by Selective Laser Melting

Abstract:

To improve mechanical properties of a closed-cell type aluminum foam, the surface pores are filled with aluminum powder by selective laser melting (SLM). The relationship between the laser irradiation conditions and solidification characteristics of aluminum powder is investigated with one-line laser irradiation on the aluminum powder with a thickness of 5 mm. The aluminum powder is continuously melted and solidified with laser spot diameter of 0.6 mm and scanning speed of 10–20 mm/s. According to the successful melting and solidification conditions, the SLM is applied to the surface pores of a closed-cell type aluminum foam supplied with aluminum powder. The supplied aluminum powder is confirmed to be successfully melted and welded to the aluminum foam. As the result, the aluminum foam with nonporous surface layer (sandwich structure) is fabricated by the SLM with aluminum powder. The compressive behavior of the fabricated aluminum foam with nonporous surface layer is investigated.

• Periodical: Key Engineering Materials (Volumes 622-623)
• Pages: 861-867
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.622-623.861
• Online since: September 2014
• Authors: Shigehiro Kanatani*, Ryo Matsumoto, Hiroshi Utsunomiya
• Keywords: Aluminum (Al), Compressive Behavior, Porous Metals, Powder, Selective Laser Melting (SLM)

References

[1] J. Banhart, Manufacture, characterization and application of cellular materials and metal foams, Progress in Materials Science, 46-6 (2001) 559-632.

DOI: 10.1016/s0079-6425(00)00002-5

[2] H. -W. Seeliger, Manufacture of aluminum foam sandwich (AFS) components, Advanced Engineering Materials, 4-10 (2002) 753-758.

DOI: 10.1002/1527-2648(20021014)4:10<753::aid-adem753>3.0.co;2-y

[3] K. Kitazono, R. Suzuki, Y. Inui, Novel strengthening method of closed-cell aluminum foams through surface treatment by resin, Journal of Materials Processing Technology, 209-7 (2009) 3550-3554.

DOI: 10.1016/j.jmatprotec.2008.08.013

[4] J. Lobos, S. Suzuki, H. Nakajima, Y. S. Ji, H. Fujii, D. Terada, N. Tsuji, Structural change and improvement of the mechanical properties of a lotus-type porous copper by wire-brushing, Journal of Physics: Conference Series, 165-1 (2009) 012070.

DOI: 10.1088/1742-6596/165/1/012070

[5] K. Matsuda, S. Koriyama, P. Sae-Tae, S. Suzuki, M. Asakawa, T. Ide, H. Nakajima, The effects of structures and mechanical properties of lotus-type porous copper by shot peening process, Journal of Japan Institute of copper, 52-1 (2013) 92-96.

[6] K. Osakada, M. Shiomi, Flexible manufacturing of metallic products by selective laser melting of powder, International Journal of Machine Tools & Manufacture, 46-11 (2006) 1188-1193.

DOI: 10.1016/j.ijmachtools.2006.01.024

[7] E. Louvis, P. Fox, C. J. Sutcliffe, Selective laser melting of aluminium components, Journal of Materials Processing Technology, 211-2 (2011) 275-284.

DOI: 10.1016/j.jmatprotec.2010.09.019

[8] E.O. Olakanmi, Selective laser sintering/melting (SLS/SLM) of pure Al, Al–Mg, and Al–Si powders: Effect of processing conditions and powder properties, Journal of Materials Processing Technology, 213-8 (2013) 1387-1405.

DOI: 10.1016/j.jmatprotec.2013.03.009

[9] T. Miyoshi, M. Itoh, S. Akiyama, A. Kitahara, ALPORAS aluminum foam: production process, properties, and applications, Advanced Engineering Materials, 2-4 (2000) 179-183.

DOI: 10.1002/(sici)1527-2648(200004)2:4<179::aid-adem179>3.0.co;2-g