Simulation of Deformation Behavior and Microstructure Evolution during Hot Forging of TC11 Titanium Alloy

Abstract

Finite element method is the most powerful tool for development and optimization of the metal forming processes. Analysis of titanium alloy critical parts should include the prediction of microstructure since their mechanical and technological properties essentially depend on the type and parameters of the microstructure. The technological process of parts production for aerospace applications is multi-operational and consists of deformation, heating and cooling stages. Therefore, it is necessary to simulate the microstructure evolution to obtain high quality parts. In presented paper FE simulation coupled with microstructure evolution during hot forging of TC11 titanium alloy has been performed by QForm FEM code. Constitutive relationships, friction conditions and microstructure evolution model have been established using the experiments. The kinetics of phase transformations has been described by the Johnson-Mehl-Avrami-Kolmogorov (JMAK) phenomenological model. The approach is illustrated by industrial case study that proved its practical applicability and economic advantages for technology development of titanium alloy critical parts.

Determination of Heat Transfer Coefficient for Air-Atomized Water Spray Cooling and Its Application in Modeling of Thermomechanical Controlled Processing of Die Forgings

“…Numerical modeling was conducted by means of the commercial program QForm3D v.10, based on finite element method (FEM) with use of Voronoi cell algorithm, used in advanced multistage hot forging and microstructure transformation simulation [ 37 , 38 , 39 , 40 ].…”

The numerical analysis of selected defects in forging processes

“…The prediction of metal flow with high accuracy during forging processes enables to simulate owing to the high quality of the used algorithms in the software based on FEM. This approach allows reduction of costs of the trial-error sampling, not only in the implementation of new technology but also the modernization of existing technology especially in the field of complex-shaped and extremely complex-shaped forging elements (Alimov et al, 2018;Ellinghausen, 2013). The commercial software allows to conduct a number of simulations of the forging processes in order to assess the geometry of the deformation zone.…”