Abstract

Under the influence of temperature fluctuations, the properties of metals can change. Thermocyclic treatment of metals, in particular steels, requires accurate detection of patterns of non-stationary temperature field in the treated metal layer. An expression was obtained for the deviation of the temperature from the value of its instantaneous equilibrium distribution for a one-dimensional homogeneous model of finite length under conditions of periodic energy action on its active surface. This solution was applied to the low carbon steel sample.

Highlights

  • Під впливом температурних коливань властивості металів можуть змінюватися

  • Under the influence of temperature fluctuations, due to thermal stresses caused by temperature gradients and phase transformations, the properties of materials may not change irreversibly

  • Local thermal non-uniform expansion is fixed by diffusion fluxes of vacancies and dislocated atoms, which leads, in addition to macroscopic changes in shape and size, to the formation of new physical properties in the surface layers of the material

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Summary

МОДЕЛЮВАННЯ ТА ОПТИМІЗАЦІЯ В ТЕХНОЛОГІЇ КОНСТРУКЦІЙНИХ МАТЕРІАЛІВ

NON-STATIONARY SURFACE TEMPERATURE FIELD LAYER OF METAL WITH PERIODIC ENERGY ACTION ON SURFACE. An expression was obtained for the deviation of the temperature from the value of its instantaneous equilibrium distribution for a one-dimensional homogeneous model of finite length under conditions of periodic energy action on its active surface. This solution was applied to the low carbon steel sample. The problem of analytical study of the temperature field of a one-dimensional homogeneous metal model of finite length l under conditions of periodic (sinusoidal) energy action with a given frequency ω on its one active surface is maintained, while maintaining a constant temperature on another surface bordering the substrate.

Aω sin ωt
So much ν
Conclusions
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