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Solubility of nitrogen in austenitic FeCrMn alloys
Author(s) -
Kunze Joachim,
Rothe Ines
Publication year - 1994
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199401081
Subject(s) - manganese , chromium , solubility , austenite , nitrogen , metallurgy , chemistry , analytical chemistry (journal) , thermodynamics , materials science , microstructure , physics , chromatography , organic chemistry
The equilibrium solubility of nitrogen in austenitic iron‐chromium, iron‐manganese, and iron‐chromium‐manganese alloys with mass up to 20 % Cr and 18 % Mn was measured in the temperature range 1273 to 1473 K. The following interaction parameters were obtained:Describing the effect of chromium and/or manganese on the nitrogen solubility by the excess term , the present measurements correspond satisfactorily to those of Hertzmann and Jarl and of Zheng in the system Fe‐Cr‐N, but they differ somewhat from values calculated by means of parameters published by Frisk. For the system Fe‐Mn‐N the present measurements correspond to measurements by Grabke et al. and to values calculated with parameters published by Qiu. Using parameters deduced from the present measurements in the austenitic Fe‐Cr‐Mn‐N system similar nitrogen solubilities were calculated as Zheng had measured, but small deviations were found between the analysis by Qiu and this investigation.