ニッケル基合金の単結晶化とタービンブレード(<特集>機能素子・部品と単結晶育成)

抄録

Greater jet enjine power and fuel economy have been achieved by incrased turbine firing temperature and adoption of efficient cooling system. The means for attaining reduced cooling flow while increasing life and reliability include refinement of new high temperature materials and fabrication process. Advanced engines employ single crystal turbine blades made through a directional solidification of Ni-based superalloys. This paper summarized methods and equipments for single crystal blade production, characterization of the materials and the future prospects.