V. I. Mironov, I. G. Emelyanov, D. I. Vichuzhanin, I. S. Kamantsev, V. V. Yakovlev, D. A. Ogorelkov, L. M. Zamaraev

A METHOD FOR EXPERIMENTAL INVESTIGATION OF DEGRADATION PROCESSES IN MATERIALS

In most cases, long-term degradation processes in the materials of metal structures are the main cause of their catastrophic destruction. A method for the experimental con­struction of rheological dependences is proposed to describe the kinetics of these processes. The phenomenological representation of the degradation process as the transition of a ductile materi­al to a brittle state is based on simple testing of single samples of a material in a rigid loading de­vice. It is shown that such external factors as cyclic loading and hydrogenation change the pa­rameters of the resulting static diagram, first of all, the available plasticity determined by the length of the diagram. It is noted that tests with the construction of complete diagrams with a falling branch offer a unified methodological basis for the investigation of degradation processes in steels and alloys.

Acknowledgment: The work was performed within the state assignment, theme No. 0391-2016-0001.

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