高速回転遊星型ボールミルを用いた短時間プロセスでのFe-48at%Cr合金の合成

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タイトル別名
  • Synthesis of Fe-48at%Cr Alloy by a Short-time Process using Fast-rotating Planetary Ball Milling
  • コウソク カイテン ユウセイガタ ボールミル オ モチイタ タンジカン プロセス デ ノ Fe 48at% Cr ゴウキン ノ ゴウセイ

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抄録

Fe-48at%Cr powder was synthesized by mechanical alloying (MA) of Fe powder and Cr powder using rapid-rotation type planetary ball mill. Homogeneous MA powder was obtained for only 600 s milling at 900 rpm of orbital speed while it had taken for over 360 ks to homogenize them at 200 rpm. The obtained powder had a crystal structure of bcc lattice and contained no brittle phase such as σ phase. The MA powder was sintered by a pulsed current sintering and completely condensed above 1000 K. The sintered Fe-48at%Cr alloy also has no σ phase. Hardness of the sintered body is Hv 380 and there was no crack around the indentation for Vickers hardness.

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