Development of low-temperature jumpwise deformation of metals and possibilities of its elimination

• DOI: 10.1007/bf02509737
• Publication Date: 2006-10-11T06:41:50Z
• Authors: E. V. Vorob’ev; V. A. Strizhalo
• Keywords: 0203 mechanical engineering; 02 engineering and technology

We propose a mathematical model of jumpwise deformation under conditions of deep cooling based on an analysis of the localized adiabatic heat release, inertial properties, and accumulated elastic energy of loading forces. The model enables one to give a qualitative description of the kinetics of intermittent flow of metals and establish quantitative estimates of the parameters of the jumps of strains, which are in reasonably good agreement with the experimental data and adequately describe the mechanical behavior of the material depending on the conditions of loading and deformation. We also consider the influence of various factors on the possibility of suppressing of the effect of mechanical instability of metals, which is of significant practical interest.