Elastoplastic Strain Invariant of Metals

Abstract

The principal characteristic of localized plastic-flow development, known as the elastoplastic invariant of deformation, is investigated for nineteen various metals. As shown, the distribution of the experimentally obtained values of the invariant can be described by the normal distribution low. The origin of the invariant and the consequences, which describe the most important features of localized plastic flow, are discussed. As established, the principal characteristics of autowave processes of localized plasticity development, for instance, the rate and dispersion, can be calculated. It is possible to calculate the relations between the scales of localized plasticity development as well as the dependence of autowave length on the structure characteristics of metals. The relationship between the measurable invariant value and the position of metal in the (Mendeleev) Periodic table is established.

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