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

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

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.

Citation

Chen, F., Cui, Z., Ou, H., & Long, H. (2016). Mesoscale modeling and simulation of microstructure evolution during dynamic recrystallization of a Ni-based superalloy. Applied Physics A, 122(10), https://doi.org/10.1007/s00339-016-0404-1

• 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
• Contract Date: Oct 4, 2016