15-5-8 : 細孔反応法によるNiAl系金属間化合物長繊維強化型複合材料の開発

In this study, a nickel-aluminides fiber / nickel composite was fabricated by the novel method, narrow holes method (RANH method) , which is a novel method to fabricate an intermetallic compound fiber / metal matrix composite is proposed. Narrow holes are drilled in the nickel matrix, and then metal aluminum fibers are inserted into these holes. The specimen is heated at elevated temperatures in an argon atmosphere to obtain molten aluminum in the holes. Then the reaction of mNi + nAl - NimAln should be caused in the narrow holes. During the reaction, intermetallic compound of NimAln replaces the aluminum maintaining its fiber shape surrounded by the nickel matrix. It was found that graded microstructure was formed at fiber I matrix interface. The hardness was gradually distributed in the specimens heat-treated at 1200℃, although stepwise hardness profiles were found in the specimens heat-treated at 1000℃.Article先進ファイバー工学研究教育拠点研究成果報告書 10: 114-114(2004)research repor