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Evaluation of influence of parameters of external mechanical exposure on surface energy size of multicomponent materials

DOI 10.18127/j15604128-201902-08

Keywords:

V.V. Kalmykov – Senior Lecturer, Kaluga branch of the Bauman MSTU
E-mail: kalmykovvv@bmstu.ru
M.V. Mousokhranov – Ph.D.(Eng.), Associate Professor, Kaluga branch of the Bauman MSTU
E-mail: marls77@ya.ru
E.V. Logutenkova – Senior Lecturer, Kaluga branch of the Bauman MSTU
E-mail: iwtbhn@mail.ru


To ensure the required reliability of the surfaces it is necessary to form them with certain values of microgeometry and physical and mechanical properties.
Parameters and modes of external influence on materials significantly affect the energy state of their near-surface layer, allow to predict and control this state, and thus control and operational characteristics of products.
In the conducted research external influence was carried out by-line mechanical microdeforming of a superficial layer of a material.
The surface energy was measured indirectly by estimating the contact potential difference by the static condenser method.
When studying the change in the surface energy of a material by means of its progressive microdeformation, the effect on the surface of samples from steel 20, steel 45, steel 12X13 was simulated. The effect of the microdeformation regimes on the surface energy at different values of the stride pitch (longitudinal tool feed) and the elastic recovery of the material was investigated.
As a result of the experiments it was established that in order to obtain the maximum value of the surface energy level after removing a layer of material with a depth of 300 μm, microdeformation should be performed. It was also found that with increasing row pitch for microdeformation of materials and with increasing depth of microdeformation, the amount of surface energy decreases.

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June 24, 2020
May 29, 2020

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