|About this Abstract
||10th International Symposium on Superalloy 718 and Derivatives (2023)
||Superalloy 718 and Derivatives
||An ICME Framework to Predict the Microstructure and Yield Strength of INCONEL 718 for Different Heat Treatments
||Taiwu Yu, Thomas Barkar, Carl-Magnus Lancelot, Paul Mason
|On-Site Speaker (Planned)
The superalloy 718 stands out for its excellent manufacturability and strength at ambient temperature. In most studies currently, people tried to improve the mechanical properties of the 718 alloy through adjusting different processing conditions such as solution annealing temperature, aging temperature and holding time, and the amount of intermediate cold work. Such study could be expensive and time consuming. In this study, we would like to build an ICME framework to investigate the microstructural stability and mechanical properties through CALPHAD method as well as TC-PRISMA tools incorporated in Thermo-Calc Software. In this study, the formation of secondary phases such as gamma prime-phase, gamma double prime-phase, and delta-phase as well as consequent mechanical properties of the microstructure with respect to the processed conditions has been studied. The evolution of precipitates can be characterized by TC-PRISMA tool with TC databases. Furthermore, Reppich’s model is applied to predict the precipitate strengthening of the alloy, and grain boundary and solid solution strengthening mechanisms are also quantified to predict the yield strength with respect to different processing. The framework can be built by the Thermo-Calc software to design alloys in terms of the processing to obtain properties needed.
||Definite: At-meeting proceedings