Some Steps towards Modelling of Dislocation Assisted Rafting: A Coupled 2D Phase Field - Continuum Dislocation Dynamics Approach

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Details zur Publikation

Autorinnen und Autoren: Wu R, Sandfeld S
Verlag: Minerals, Metals and Materials Society
Jahr der Veröffentlichung: 2016
Seitenbereich: 641-648


Abstract


The interaction between edge dislocations and γ′ precipitates as in nickel-based super-alloys is studied by coupling a phase field model and a 2D continuum dislocation dynamic model. Various stresses, which serve as communicator between dislocations and precipitates, are calculated by an eigenstrain method for both the γ/γ′ misfit and the dislocations. Our simulations show how edge dislocations tend to move to and pile up at specific γ/γ′ interfaces. The growth of γ′ is inhibited at the interface where dislocations are piling up, due to the reduction of elastic energy. The potential of our coupled model for simultaneous microstructure patterning and mechanical property prediction is discussed.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Sandfeld, Stefan Dr.
Lehrstuhl für Werkstoffsimulation
Wu, Ronghai
Lehrstuhl für Werkstoffsimulation


Zitierweisen

APA:
Wu, R., & Sandfeld, S. (2016). Some Steps towards Modelling of Dislocation Assisted Rafting: A Coupled 2D Phase Field - Continuum Dislocation Dynamics Approach. In Proceedings of the 145th Annual Meeting and Exhibition, TMS 2016 (pp. 641-648). Minerals, Metals and Materials Society.

MLA:
Wu, Ronghai, and Stefan Sandfeld. "Some Steps towards Modelling of Dislocation Assisted Rafting: A Coupled 2D Phase Field - Continuum Dislocation Dynamics Approach." Proceedings of the 145th Annual Meeting and Exhibition, TMS 2016 Minerals, Metals and Materials Society, 2016. 641-648.

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Zuletzt aktualisiert 2019-04-08 um 07:12