钛合金复杂构件等温锻宏微观成形规律与调控研究进展

Titanium alloy complex components are widely used in various industries, such as aviation and aerospace. The isothermal forging is an effective method to achieve the integrated manufacturing of these components with excellent shape accuracy and mechanical performance. However, isothermal forging forming of titanium alloy complex components is a complex process under multi-die constraints and multi-parameters influence. Moreover, the structural complexity of component and the microstructure sensitivity of titanium alloy material make the workpiece undergo complex temperature history and strongly inhomogeneous deformation during the forming process. This may result in macro defects, such as under-filling, disordered streamline and folding, and complex microstructure evolutions, such as phase transformation, dynamic recrystallization and globularization. Then the service performance of components is influenced and the realization of precise forming manufacturing with high performance is restricted. To this end, lots of researches conduct on the macro and micro forming rules for titanium alloy complex components by scholars at home and obroad. The research progresses in the material flow, macro defects, evolution rule of microstructure and properties were reviewed, and the problems and challenges in this field were summerized.