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- W2799308811 abstract "As the optimization of highly demanding engine parts like engine disks pushes the materials used to their limits, the estimation of the materialMaterial properties becomes increasingly important. The complex interactions of strengthening mechanismsStrengthening mechanisms in direct aged (DA) Alloy 718Alloy 718 forgings demand detailed modeling of each mechanism. As some strengthening mechanismsStrengthening mechanisms are influenced during the billet processingBillet processing it is essential to consider the forgingForging stock manufacturing in the designDesign process of forged engine disks. Therefore, a finite element analysis of the billet processingBillet processing was incorporated in an existing simulation chainSimulation chain of the closed die forgingForging process of engine disks. It includes all thermo-mechanical operations after vacuum arc remelting, i.e. homogenizationHomogenization , upsetting, drawing and radial forgingForging of the billet as well as prepressing, forgingForging and heat treatmentHeat treatment of a diskDisk . In order to implement the local variations of microstructureMicrostructure caused by the billet processingBillet processing a newly developed grain class model was applied. Furthermore a duplex microstructureMicrostructure , which is often present in the surface region of the billet, was considered using the grain class model. For a sound precipitationPrecipitation modeling the local temperatureTemperature history of the whole simulation chainSimulation chain was considered in the thermo-kinetic software tool MatCalc. After parameterization of the MatCalc model, parameters for the precipitationPrecipitation , solid solution and grain boundary contribution to the total yield strengthStrength was calculated. For the determination of the DA-effectDA-effect a semi-empirical, deterministic model was developed. The established, automated simulation chainSimulation chain takes all mentioned mechanisms into account and calculates the local yield strengthStrength of the forged engine diskEngine disk ." @default.
- W2799308811 created "2018-05-17" @default.
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- W2799308811 date "2018-01-01" @default.
- W2799308811 modified "2023-09-25" @default.
- W2799308811 title "Development of an Automated Property Simulation Tool for Direct Aged Alloy 718 Engine Disk Forgings" @default.
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- W2799308811 doi "https://doi.org/10.1007/978-3-319-89480-5_21" @default.
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