The cluster variation method has been applied to establish effective interaction potentials that describe both n'-Fe 4 N 1 mx - k-Fe 2 N 1 mz miscibility gaps in the Fe-N phase diagram. The calculated nitrogen distributions show that long-range order occurs in the n:'-Fe 4 N 1 mx phase and that short-range ordering as well as long-range ordering occurs in the k-Fe 2 N 1 mz phase. The calculated nitrogen distributions for the k-Fe 2 N 1 mz , pertaining to temperatures and concentrations at the n'- k-phase boundaries, are compared with available data obtained by Mössbauer spectrometry. Preferential occupation of specific interstitial sites occurs from about 16 at.% N onwards; at the highest concentration considered, about 25 at.% N, the occupation is that of Fe 3 N as proposed in the literature on the basis of diffraction data.
Application of the cluster variation method to an interstitial solid solution: Calculation of the γ ′-Fe 4 N 1-x -ε-Fe 2 N 1-z equilibrium
Reprints and Corporate Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
To request a reprint or corporate permissions for this article, please click on the relevant link below:
Academic Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
Obtain permissions instantly via Rightslink by clicking on the button below:
If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.
Related Research Data
Related research
People also read lists articles that other readers of this article have read.
Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.
Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.