Nondestructive observation of pore structures of A1050 porous aluminum fabricated by friction stir processing

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概要

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• In the automotive industry, porous aluminum is expected to be used as a new functional material because of its light weight, high energy absorption and high sound-insulating property. Recently, a new processing route for fabricating the porous aluminum precursor, which utilizes friction stir processing (FSP), has been developed. It is expected that, by applying the FSP route precursor method, the cost-effective fabrication of porous aluminum with high productivity can be realized. In this study, two different types of AlO50 porous aluminum were fabricated from two different sizes of precursor by the FSP route precursor method. The two types of porous aluminum fabricated using small and large precursors are hereafter referred to FSP-S porous aluminum and FSP-L porous aluminum, respectively. The pore structures of FSP-S porous aluminum, FSP-L porous aluminum and also commercially available porous aluminum (ALPORAS, fabricated by Shinko Wire Co., Ltd.) were nondestructively observed by X-ray computed tomography (X-ray CT). From the nondestructive observation of pore structures, it was shown that a large number of pores of smaller area and volume were distributed in porous aluminum fabricated by the FSP route precursor method compared with the pores in ALPORAS. However, there was little difference in the circularity of pores between porous aluminum fabricated by the FSP route and ALPORAS, and there was little dependence of the pore structure on the precursor size for porous aluminum fabricated by the FSP route. This result indicates the potential of the FSP route for fabricating larger porous aluminum samples.

• 2010-03-01

著者

• HASEGAWA Makoto

  Division of Protein Organic Chemistry, Institute for Protein Research, Osaka University

• Koyama Shinji

  Department Of Mechanical System Engineering Graduate School Of Engineering Gunma University

• UTSUNOMIYA Takao

  Research Organization for Advanced Engineering, Shibaura Institute of Technology

• HANGAI Yoshihiko

  Department of Mechanical System Engineering, Graduate School of Engineering, Gunma University

• KUWAZURU Osamu

  Department of Nuclear Power and Energy Safety, Graduate School of Engineering, University of Fukui

• YOSHIKAWA Nobuhiro

  Institute of Industrial Science, The University of Tokyo

• OZEKI Yuichiro

  Department of Mechanical System Engineering, Graduate School of Engineering, Gunma University

• KAWANO Shigehiro

  Department of Mechanical System Engineering, Graduate School of Engineering, Gunma University

• Ozeki Yuichiro

  Department Of Mechanical System Engineering Graduate School Of Engineering Gunma University

• Kuwazuru Osamu

  Department Of Nuclear Power And Energy Safety Graduate School Of Engineering University Of Fukui

• Utsunomiya Takao

  Research Organization For Advanced Engineering Shibaura Institute Of Technology

• Kitahara Soichiro

  Gundai Co. Ltd.

• Yoshikawa Nobuhiro

  Institute Of Industrial Science The University Of Tokyo

• Hasegawa Makoto

  Division Of Materials Science And Engineering Graduate School Of Engineering Yokohama National Unive

• Hangai Yoshihiko

  Department Of Mechanical System Engineering Graduate School Of Engineering Gunma University

• Hangai Yoshihiko

  Department Of Mechanical System Engineering Faculty Of Engineering Gunma University

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