Numerical investigation of the recrystallization kinetics by means of the KWC phase-field model with special order parameters
Numerical investigation of the recrystallization kinetics by means of the KWC phase-field model with special order parameters
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DOI：
10.1088/1361-651x/aa6a2a
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发表时间：
2017-04
影响因子：
1.8
通讯作者：
J. Kundin
中科院分区：
文献类型：
--
作者：
J. Kundin
本文提出了对Kobayashi，Warren和Carter相场模型(KWC)的扩展，如Warren等人2002年的学报所描述的那样。包括在具有预变形缺陷结构的合金系统的热处理过程中发生的再结晶过程。对标准的KWC模型进行了扩展，增加了再结晶晶粒的序参数，描述了稳态运动边界的一般结果。对不同体系的初始晶界长大和再结晶过程的模拟结果表明，扩展相场模型能够描述初始晶界对再结晶动力学的影响，并考虑了小角度晶界迁移率对取向分布的影响。
The present paper proposes an extension to the phase-field model of Kobayashi, Warren and Carter (KWC) as described in (Warren et al 2002 Acta Mater.) to incorporate the recrystallization process which occurs during heat treatments of alloy systems with predeformed defect structure. The standard KWC model is extended by an additional order parameter for recrystallized grains and describes the general results for the steady-state moving boundary. The simulation results of the initial grain growth and recrystallization process in various systems show that the extended phase-field model is able to describe the influence of the initial grain boundaries on the recrystallization kinetics and to incorporate the misorientation dependency of the low angle grain boundary mobility which strongly influences the orientation distribution in the resulting microstructure.