综述了近β钛合金高温压缩变形过程中流变软化行为的影响因素、流变软化机制及其分析方法以及基于流变软化机制的本构方程的发展,重点分析了变形工艺参数以及原始微观组织对流变软化行为的影响规律,此外,讨论了动态回复、动态再结晶、变形热等软化机制对软化现象的贡献,并提出了近β钛合金高温变形过程中关于流变软化现象亟待解决的问题,指出定量化及物理模型化是未来近β钛合金高温变形过程中流变软化现象的重要发展方向.
Flow softening behavior during hot compression deformation process of near β titanium al-loys was reviewed ,including the influencing factors ,the flow softening mechanism and its analysis methods ,the development of the constitutive model based on softening mechanism .The influence of deformation parameters and initial microstructure on flow softening behavior was primarily analyzed . Besides ,the contribution of softening mechanisms such as dynamic recovery ,dynamic recrystallization and deformation heating to flow softening was discussed .The problems urgently to be solved during hot deformation process regarding to flow softening were proposed ,and it is pointed that quantify and physical modeling will be the important directions of near β titanium alloys during hot deformation process with respect to softening phenomenon in the future .
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