Extrusion Sintering of Harmonic-Structured Composite with Ti-48 mol%Al Alloy and Pure Titanium by SPS Process

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  • Fujiwara Hiroshi
    Department of Mechanical and Systems Engineering, Faculty of Science and Engineering, Doshisha University
  • Yoshida Reo
    Department of Mechanical and Systems Engineering, Faculty of Science and Engineering, Doshisha University
  • Tsuda Tatsuro
    Department of Mechanical and Systems Engineering, Faculty of Science and Engineering, Doshisha University
  • Miyamoto Hiroyuki
    Department of Mechanical and Systems Engineering, Faculty of Science and Engineering, Doshisha University

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Other Title
  • Ti-48 mol%Al/純 Ti 複合調和組織材料の SPS 法を利用した押出し焼結
  • Ti-48 mol%Al/ジュンTi フクゴウ チョウワ ソシキ ザイリョウ ノ SPSホウ オ リヨウ シタ オシダシ ショウケツ

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Description

A harmonic-structured composite with a fine grain Ti-48 mol%Al alloy network and dispersed coarse grain pure titanium is produced by extrusion sintering using the spark plasma sintering (SPS) process. The conditions of extrusion sintering by the SPS process are a sintering temperature of 1073 K, a holding time of 1.8 ks and an extrusion pressure of 100 MPa with a pressurization rate of approximately 0.1 MPa/s. The extrusion compact has a rod shape with φ5×48 mm. The extrusion compact is composed of an elongated harmonic structure with the Ti-48 mol%Al alloy network and the dispersed pure titanium. The Vickers hardness of the extrusion compact is about 220 Hv, which is almost the same as that of a conventional compact.<br>

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