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Stabilization of the open-die forging process of TiAl alloys by using a close-loop control in the finite element simulation in case of unexpected disturbances

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Stabilization of the open-die forging process of TiAl alloys by using a close-loop control in the finite element simulation in case of unexpected disturbances
Συγγραφείς: Feistle, Martin, Ali, Syed, Linder, Christian, Thein, Ferdinand, Bambach, Markus, Herty, Michael
Έτος έκδοσης: 2025
Συλλογή: Publikationsdatenbank der Fraunhofer-Gesellschaft
Θεματικοί όροι: casting , finite element method-data processing, computer simulation, 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::004 Datenverarbeitung, Informatik
Περιγραφή: High-strength Titanium Aluminide (TiAl) alloys hold great potential for future applications in lightweight turbine blades. Their success depends on reliably achieving a consistent transformation from the initial cast microstructure to a globular target microstructure throughout all critical areas of the blade. The exclusive use of a multi-stage closed-die forging process means that TiAl alloys cannot be reliably formed into turbine blades. The process chain must therefore be extended by a multi-stroke open-die forging process in order to integrate further degrees of freedom into the process. During the open-die forging of TiAl alloys, however, unexpected process disturbances often occur, e.g. in the form of a fluctuation in temperature or forming speed, which has an unwanted effect on the microstructure. For the simulations within the present work, a finite element model of the considered process is included, which is extended by a corresponding material model to describe the globularization state of the material and a closedloop control. The exponentially damping controller developed in the research project is intended to regulate disturbance variables as quickly as possible to achieve a minimum deviation from the target microstructure state. The function of the controller is simulatively tested, discussed and evaluated as part of the work. ; 3104
Τύπος εγγράφου: article in journal/newspaper
Περιγραφή αρχείου: application/pdf
Γλώσσα: English
Relation: International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes 2025; Journal of physics. Conference series; #PLACEHOLDER_PARENT_METADATA_VALUE#; https://publica.fraunhofer.de/handle/publica/496363
DOI: 10.1088/1742-6596/3104/1/012104
Διαθεσιμότητα: https://publica.fraunhofer.de/handle/publica/496363
https://doi.org/10.1088/1742-6596/3104/1/012104
Rights: CC BY 4.0
Αριθμός Καταχώρησης: edsbas.184367AA
Βάση Δεδομένων: BASE
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  – Url: https://publica.fraunhofer.de/handle/publica/496363#
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  Label: Title
  Group: Ti
  Data: Stabilization of the open-die forging process of TiAl alloys by using a close-loop control in the finite element simulation in case of unexpected disturbances
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  Data: <searchLink fieldCode="AR" term="%22Feistle%2C+Martin%22">Feistle, Martin</searchLink><br /><searchLink fieldCode="AR" term="%22Ali%2C+Syed%22">Ali, Syed</searchLink><br /><searchLink fieldCode="AR" term="%22Linder%2C+Christian%22">Linder, Christian</searchLink><br /><searchLink fieldCode="AR" term="%22Thein%2C+Ferdinand%22">Thein, Ferdinand</searchLink><br /><searchLink fieldCode="AR" term="%22Bambach%2C+Markus%22">Bambach, Markus</searchLink><br /><searchLink fieldCode="AR" term="%22Herty%2C+Michael%22">Herty, Michael</searchLink>
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  Data: 2025
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  Data: Publikationsdatenbank der Fraunhofer-Gesellschaft
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  Data: <searchLink fieldCode="DE" term="%22casting+<chemical+technology>%22">casting <chemical technology></searchLink><br /><searchLink fieldCode="DE" term="%22finite+element+method-data+processing%22">finite element method-data processing</searchLink><br /><searchLink fieldCode="DE" term="%22computer+simulation%22">computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22000+Informatik%22">000 Informatik</searchLink><br /><searchLink fieldCode="DE" term="%22Informationswissenschaft%22">Informationswissenschaft</searchLink><br /><searchLink fieldCode="DE" term="%22allgemeine+Werke%3A%3A000+Informatik%22">allgemeine Werke::000 Informatik</searchLink><br /><searchLink fieldCode="DE" term="%22Wissen%22">Wissen</searchLink><br /><searchLink fieldCode="DE" term="%22Systeme%3A%3A004+Datenverarbeitung%22">Systeme::004 Datenverarbeitung</searchLink><br /><searchLink fieldCode="DE" term="%22Informatik%22">Informatik</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: High-strength Titanium Aluminide (TiAl) alloys hold great potential for future applications in lightweight turbine blades. Their success depends on reliably achieving a consistent transformation from the initial cast microstructure to a globular target microstructure throughout all critical areas of the blade. The exclusive use of a multi-stage closed-die forging process means that TiAl alloys cannot be reliably formed into turbine blades. The process chain must therefore be extended by a multi-stroke open-die forging process in order to integrate further degrees of freedom into the process. During the open-die forging of TiAl alloys, however, unexpected process disturbances often occur, e.g. in the form of a fluctuation in temperature or forming speed, which has an unwanted effect on the microstructure. For the simulations within the present work, a finite element model of the considered process is included, which is extended by a corresponding material model to describe the globularization state of the material and a closedloop control. The exponentially damping controller developed in the research project is intended to regulate disturbance variables as quickly as possible to achieve a minimum deviation from the target microstructure state. The function of the controller is simulatively tested, discussed and evaluated as part of the work. ; 3104
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  Data: International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes 2025; Journal of physics. Conference series; #PLACEHOLDER_PARENT_METADATA_VALUE#; https://publica.fraunhofer.de/handle/publica/496363
– Name: DOI
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  Data: 10.1088/1742-6596/3104/1/012104
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  Data: https://publica.fraunhofer.de/handle/publica/496363<br />https://doi.org/10.1088/1742-6596/3104/1/012104
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      – Text: English
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      – SubjectFull: finite element method-data processing
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