Consolidation and Mechanical Properties of High Strength Rapidly Solidified Al-TM-Ln Alloy Powder.

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  • Otsuki Masato
    Materials Research Laboratories, Central Research Institute, Mitsubishi Materials Corporation
  • Yuri Koichi
    Materials Research Laboratories, Central Research Institute, Mitsubishi Materials Corporation
  • Kohno Tohru
    Materials Research Laboratories, Central Research Institute, Mitsubishi Materials Corporation
  • Inoue Akihisa
    Institute for Materials Research, Tohoku University

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  • 常圧及び加圧焼結のメカニズムとニヤネットシェイプ制御　高強度Ａｌ‐ＴＭ‐Ｌｎ系急冷凝固粉末の成形固化および材料特性
  • コウ キョウド Al TM Lnケイ キュウレイ ギョウコ フンマツ ノ セイ

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Rapidly solidified AI-TM-Ln base alloy has excellent mechanical properties such as high specific strength or specific modulus. In this study, Al92Ni4.5Ti1.5CulZr0.8Ce0.2 (at%) alloy powders were directly forged using a double action forging press without preparing a compact preform that is difficult to consolidate because of the spherical shape and hardness of the powder. The tensile strength of above test pieces preheated at 723K for 3600s shows 670MPa and 2% elongation, which is comparable with the test pieces prepared by extrusion from the same powder. This process gives near net shape parts with excellent mechanical properties using the rapidly solidified Al-TM-Ln base alloy.

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