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

被引：0
|
作者：
Fei Chen
Zhenshan Cui
Hengan Ou
Hui Long
机构：
[1] University of Nottingham,Department of Mechanical, Materials and Manufacturing Engineering
[2] Shanghai Jiao Tong University,Institute of Forming Technology and Equipment
[3] University of Sheffield,Department of Mechanical Engineering
来源：
Applied Physics A | 2016年 / 122卷
关键词：
Dislocation Density; Flow Stress; Microstructural Evolution; Cellular Automaton; Grain Morphology;
D O I：
暂无
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学科分类号：
摘要：
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 two-dimensional (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.
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