Anomalous Jump of Stress upon the Variation of the Rate of Deformation of Single Crystals of the Ni_3Ge Alloy with an L1_2 Superstructure under the Conditions of Cubic Slip

摘要

This paper contains the experimental results obtained upon the variation of the rate of plastic deformation of the Ni_3Ge alloy with a superstructure of the L1_2 type, which has an anomalous temperature dependence of mechanical properties. The anomalous strain-rate dependence of mechanical properties of this alloy under the conditions of cubic slip has been found for the first time. A model is suggested that explains the observed shape of the stress jump. Based on this model, the normal and anomalous components of the stress jump have been separated. The temperature dependences of the stress jump and its components are analyzed.