Research progress on forming process of TiAl alloy blade components
Due to the excellent properties such as high-temperature strength and specific strength of TiAl alloys,its application in aero-space engine blades,automotive turbine blades and other blade components has attracted much attention.However,there are challenges such as intrinsic brittleness,high temperature/strain rate sensitivity in high temperature deformation,narrow thermal working window and ease of cracking in thermal deformation of TiAl alloys,which leads to great difficulty in the manufacturing of TiAl alloy blade components.With the improvement of TiAl alloy system,besides the casting forming,forging and additive manufacturing processes are gradually ap-plied to the manufacturing of TiAl alloy blade components for aeroengines.The principles,process parameters and application status of casting,forging and additive manufacturing processes of TiAl alloy blade components in recent years were summarized and analyzed,and the manufacturing process of TiAl blades was prospected.
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