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Mesoscale modeling and simulation of microstructure evolution during dynamic recrystallization of a Ni-based superalloy

Chen, Fei; Cui, Zhenshan; Ou, Hengan; Long, Hui

Mesoscale modeling and simulation of microstructure evolution during dynamic recrystallization of a Ni-based superalloy Thumbnail


Authors

Fei Chen

Zhenshan Cui

HENGAN OU H.OU@NOTTINGHAM.AC.UK
Associate Professor

Hui Long



Abstract

Microstructural evolution and plastic flow characteristics of a Ni-based superalloy were investigated using a simulative model that couples the basic metallurgical principle of dynamic recrystallization (DRX) with the twodimensional (2D) cellular automaton (CA). Variation of dislocation density with local strain of deformation is considered for accurate determination of the microstructural evolution during DRX. The grain topography, the grain size and the recrystallized fraction can be well predicted by using the developed CA model, which enables to the establishment of the relationship between the flow stress, dislocation density, recrystallized fraction volume, recrystallized grain size and the thermomechanical parameters.

Journal Article Type Article
Acceptance Date Aug 28, 2016
Online Publication Date Sep 14, 2016
Publication Date Oct 1, 2016
Deposit Date Oct 4, 2016
Publicly Available Date Oct 4, 2016
Journal Applied Physics A
Print ISSN 0947-8396
Electronic ISSN 1432-0630
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 122
Issue 10
DOI https://doi.org/10.1007/s00339-016-0404-1
Public URL https://nottingham-repository.worktribe.com/output/807787
Publisher URL http://link.springer.com/article/10.1007%2Fs00339-016-0404-1

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