The mechanisms of dynamic recovery and dynamic recrystallization significantly affect the mechanical behavior and microstructure of the materials deformed at high temperatures. The modified Kocks and Mecking (K–M) model was used to assess the evolution of dislocation density of pure copper under high-temperature compression. The relationship between the deformation conditions and model parameters was derived and verified. The model offers quantitative prediction of flow stress curves, a recrystallized fraction, and recrystallized grain size under different conditions. The model can well integrate the recrystallization mechanism during deformation. The dislocation density and dynamic recrystallization evolution of pure copper provide a basis for optimizing thermomechanical processing in different fields of industry.

中文翻译：

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变形纯铜中位错密度和动态再结晶的验证

动态恢复和动态再结晶的机制显着影响高温下变形材料的机械性能和微观结构。改进的Kocks and Mecking（KM）模型用于评估高温压缩下纯铜的位错密度的演变。推导并验证了变形条件与模型参数之间的关系。该模型提供了在不同条件下的流动应力曲线，重结晶分数和重结晶晶粒尺寸的定量预测。该模型可以很好地整合变形过程中的再结晶机理。纯铜的位错密度和动态再结晶演化为优化不同工业领域的热机械加工提供了基础。