Abstract—

Based on the analysis of the results of experimental studies of 12Х18Н10Т stainless steel specimens under a rigid (controlled deformation) process of deformation, which includes a sequence of monotonic and cyclic loading modes, some features and differences in isotropic and anisotropic hardening processes under monotonic and cyclic loading are revealed. To describe these features within the framework of the theory of plasticity in the space of the plastic strain tensor, a criterion for changing the direction of plastic deformation and a memory surface are introduced, which made it possible to separate the processes of monotonic and cyclic deformation. To describe the transient processes, evolutionary equations are formulated for the parameters of isotropic and anisotropic hardening. The calculated and experimental changes in the stress-strain states are compared for the process of monotonic and cyclic loading.

中文翻译：

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单调和循环变形过程的可塑性修正理论

摘要-

基于对12Х18Н10Т不锈钢试样在刚性（受控变形）变形过程中的实验研究结果的分析，包括一系列单调和循环加载模式，以及在单调和各向异性下各向同性和各向异性硬化过程的一些特征和差异。揭示了周期性加载。为了在塑性应变张量空间内的可塑性理论的框架内描述这些特征，引入了改变塑性变形方向和记忆表面的准则，这使得分离单调和循环变形的过程成为可能。 。为了描述瞬态过程，针对各向同性和各向异性硬化的参数制定了演化方程。