Advance in manufacture technology and mechanism of aero-engine dual property disk

Dual property turbine or compressor disk for high thrust-weight ratio areo-engine was in deeply studied due to its dual microstructure and excellent mechanical properties in recent years. The advance in aero-engine dual property disk of superalloy and titanium alloy was introduced. And dual property disks consisting of two alloys and one alloy were compared. Moreover, the encounter problems in the study were analysed with emphasis. In the future, the research focuses on dual property disks of P/M superalloy and titanium alloy which are suitable for dual microstructure heat treatment (DMHT), apparatus improvement for DMHT, ultrafine-grained billet and improving the performance of dual alloy disk joints.