Phase Field Simulation of Rafting Behavior of γ`Phase in Nickel Base Superalloy

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 33-37)

Edited by:

Wei Yang, Mamtimin Geni, Tiejun Wang and Zhuo Zhuang

Pages:

471-476

DOI:

10.4028/www.scientific.net/AMR.33-37.471

Citation:

A. Takahashi et al., "Phase Field Simulation of Rafting Behavior of γ`Phase in Nickel Base Superalloy", Advanced Materials Research, Vols. 33-37, pp. 471-476, 2008

Online since:

March 2008

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Price:

$35.00

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