Abstract

The article discusses previously obtained results of experimental studies of multi-component alloys, in which all components are elements of substitution. It adduces the arguments that the formation of diffusion pairs in the liquid state of the alloy is the reason that causes the very possibility of the decomposition of multi-component substitution alloys. It is shown that in substitution-intеrstitial alloys such diffusion pairs are formed only between substitution atoms, the interstitial atoms do not participate in this process in view of their very high diffusion rate at high temperatures. Electron microscopic data obtained in the article show how the ternary Fe-22% Cr-1.1% N alloy decomposes when the temperature of its heating is reduced from the liquid state to the aging temperature.

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