航空エンジン高性能化に向けてのTiAl合金，CMC複合材料の開発と部品製造技術

抄録

Advanced materials are very important to improve the performance of aircraft engines. Superalloys and titanium alloys have been developed to raise the operating temperature and reduce the weight of engine components. However, engines in the 21st century will require advanced materials with higher heat-resistance, superior mechanical properties and reduced weight. Intermetallic compounds and composites have been considered as alternate materials, replacing the existing Ni-based superalloys. In particular, Gamma-TiAl and Ceramic Matrix Composite are expected to be revolutionary materials. In order for both advanced materials, TiAl and CMC, to be widely employed in structural use, it is important to understand the effects of metallurgical features on various properties. We have focused on the development of these advanced materials. In addition, with an industrial view to applications, problems are discussed through our experience in engine tests.