Jointing of porous aluminum by press forming of multiple precursors during foaming process

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  • Ohashi Masataka
    Graduate Student, Division of Mechanical Science and Technology, Graduate School of Science and Technology, Gunma University
  • Hangai Yoshihiko
    Division of Mechanical Science and Technology, Faculty of Science and Technology, Gunma University
  • Amagai Kenji
    Division of Mechanical Science and Technology, Faculty of Science and Technology, Gunma University
  • Matsubara Masaaki
    Division of Mechanical Science and Technology, Faculty of Science and Technology, Gunma University
  • Suzuki Ryosuke
    Division of Mechanical Science and Technology, Faculty of Science and Technology, Gunma University
  • Utsunomiya Takao
    Department of Mechanical Engineering, Faculty of Engineering, Shibaura Institute of Technology
  • Yoshikawa Nobuhiro
    Institute of Industrial Science, The University of Tokyo

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Other Title
  • 複数プリカーサ発泡過程のプレス加工によるポーラスアルミニウムの接合
  • フクスウ プリカーサ ハッポウ カテイ ノ プレス カコウ ニ ヨル ポーラスアルミニウム ノ セツゴウ

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Abstract

<p>Porous aluminum is a multifunctional metal material with a light weight and high energy absorption. In our previous study, it was shown that press forming during the foaming of a precursor can form porous aluminum while maintaining its porous structure. In this study, the jointing of porous aluminum by press forming during the foaming of multiple precursors was investigated. The precursors were fabricated via the friction stir welding route. The joint-ing and shaping of porous aluminum were simultaneously carried out by press forming of the precursors with main-taining their porous structures. From a four-point bending test of the obtained samples, the joint strength was found to be equivalent to the strength of the base porous aluminum. No oxide films were observed at the fracture surfaces generated at the surface of the precursors, which prevented jointing between multiple porous aluminum while po-rous structures were obtained, which indicated good jointing.</p>

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