Phase field simulation of rafting behavior of γ' phase in nickel base superalloy

Akiyuki Takahashi, Yutaka Kobayashi, Masanori Kikuchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper describes phase field simulations of the rafting behavior of γ' phase with a simple interfacial dislocation network model. The interfacial dislocation network model accounts for the effect of the network on the lattice misfit between γ and γ' phases and the subsequent rafting behavior. The model is implemented into the phase field simulation to see the dependence of the rafting behavior of γ' phases on the interfacial dislocation network. Without the dislocation network model, the amount of the rafting was negligibly small. On the other hand, with the dislocation network model, the γ' phases shows a large amount of rafting, which is in good agreement with the results of the experimental observations. Therefore, the combination of the phase field method and the simple interfacial dislocation network model developed in this work is appropriate for the simulation of the rafting of γ' phases.

Original languageEnglish
Title of host publicationAdvances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
PublisherTrans Tech Publications
Pages471-476
Number of pages6
ISBN (Print)0878493999, 9780878493999
Publication statusPublished - 1 Jan 2008
Event7th International Conference on Fracture and Strength of Solids, FEOFS 2007 - Urumqi, China
Duration: 27 Aug 200729 Aug 2007

Publication series

NameAdvanced Materials Research
Volume33-37 PART 1
ISSN (Print)1022-6680

Conference

Conference7th International Conference on Fracture and Strength of Solids, FEOFS 2007
CountryChina
CityUrumqi
Period27/08/0729/08/07

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Keywords

  • Interfacial dislocation network
  • Nickel base superalloy
  • Phase field
  • Rafting

Cite this

Takahashi, A., Kobayashi, Y., & Kikuchi, M. (2008). Phase field simulation of rafting behavior of γ' phase in nickel base superalloy. In Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007) (pp. 471-476). (Advanced Materials Research; Vol. 33-37 PART 1). Trans Tech Publications.