組織制御したNi‐Al‐Mo系In‐Situ複合材料の高温強度評価

  • 高木 均
    徳島大学工学部機械工学科
  • 高橋 康司
    徳島大学大学院工学研究科エコシステム工学専攻
  • 藤村 純雄
    徳島大学大学院工学研究科エコシステム工学専攻

書誌事項

タイトル別名
  • High Temperature Strength of Structure-Controlled Ni-Al-Mo In-Situ Composites
  • ソシキ セイギョ シタ Ni Al Moケイ In Situ フクゴウ ザイリョウ ノ コウオン キョウド ヒョウカ

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説明

The microstructural-controlling of uni-directionally solidified Ni-Al-Mo in-situ composites has been conducted by changing growth rates and by the addition of rhenium (Re) or iridium (Ir). Oxidation resistance at 1000°C in air and high temperature strength at 800°C of these in-situ composites have also been examined and have been compared with those of conventional Ni-base superalloys, such as MAR-M247 and IN-100. The morphology of strengthening phase, that is Mo phase, changed from fiber-like shape to plate-like shape with increasing the growth rate. A superior oxidation resistance evaluated for 30h was observed for Ni-Al-Mo-Ir in-situ composites. On the other hand, high strength and large fracture strain were obtained for Ni-Al-Mo-Re in-situ composites. Experimental results showed that these composites possessed excellent high temperature properties, which was better than or comparable with those of Ni-base superalloys.

収録刊行物

  • 材料

    材料 52 (7), 838-842, 2003

    公益社団法人 日本材料学会

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