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Influence of nitrogen on the mechanism of austenitic stainless steel hardening

  • Solid State Physics
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Abstract

On the example of a C18N12M2 austenitic stainless steel, the influence of nitrogen (whose content varied from 0 to 0.45 wt.%) on the grain boundary hardening coefficient k h entering into the Hall-Patch equation is analyzed. High values of k h in steels with and without nitrogen are found. The data of the Auger analysis show that the hardening coefficient in the steel without nitrogen is determined by the grain-boundary segregation of carbon and oxygen. The grain-boundary hardening in the steel with nitrogen is not connected with the predominant segregation of nitrogen at grain boundaries. It is completely governed by intragranular processes—interaction of nitrogen atoms with dislocations.

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Omsk State Pedagogical University. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 47–52, July, 1999.

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Gerashchenko, I.P., Nikitina, N.V. & Karmanchuk, I.V. Influence of nitrogen on the mechanism of austenitic stainless steel hardening. Russ Phys J 42, 631–635 (1999). https://doi.org/10.1007/BF02513228

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  • DOI: https://doi.org/10.1007/BF02513228

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