The paper deals with modelling of the plastic and creep deformation of metals coupled with current. The passage of DC manifests itself in the increase in creep deformation and leads to primary creep time shortening. With plastic deformation, a short electric impulse results in the step-wise decrease of stress (stress-drop) on the stress–strain diagram. To catch these phenomena, we utilize the synthetic theory of recoverable deformation. The constitutive equation of this theory is supplemented by a term taking into account the intensity of DC. Further, we introduce DC intensity into the function governing transient creep. As a result, we predict the parameters of transient creep and calculate the stress-drop as a function of current intensity. The model results show good agreement with experimental data.

本文涉及与电流耦合的金属的塑性和蠕变变形的建模。DC的通过表现为蠕变变形的增加，并导致初级蠕变时间缩短。由于塑性变形，短时的电脉冲会导致应力应变图上的应力逐步减小（应力降）。为了捕捉这些现象，我们利用可恢复变形的综合理论。该理论的本构方程由考虑直流强度的术语补充。此外，我们将直流强度引入到控制瞬态蠕变的函数中。结果，我们预测了瞬态蠕变的参数并计算了作为电流强度的函数的应力降。模型结果与实验数据吻合良好。