<abstract xmlns="http://www.w3.org/1999/xhtml">The 57Fe Mössbauer spectra for the iron-based solid solutions Fe0.90Cr0.10 and Fe0.88Cr0.12 were measured at different temperatures ranging from 300 K to 900 K. Analysis of the obtained spectra shows that the distribution of impurity atoms in the two first coordination shells of 57Fe nuclei is not random and it cannot be described by the binomial distribution. Quantitatively, the effects were described in terms of the atomic short-range order (SRO) parameters and the pair-wise interaction energy with the help of a quasi-chemical type formulation introduced by Cohen and Fine. The obtained results reveal strong clustering-type correlations in the studied samples (a predominance of Fe-Fe and Cr-Cr bonds). Moreover, the changes in SRO values observed during thermal processing suggest that the distribution of Cr atoms in an α-iron matrix is strongly temperature dependent.</abstract>

The 57Fe Mössbauer spectra for the iron-based solid solutions Fe0.90Cr0.10 and Fe0.88Cr0.12 were measured at different temperatures ranging from 300 K to 900 K. Analysis of the obtained spectra shows that the distribution of impurity atoms in the two first coordination shells of 57Fe nuclei is not random and it cannot be described by the binomial distribution. Quantitatively, the effects were described in terms of the atomic short-range order (SRO) parameters and the pair-wise interaction energy with the help of a quasi-chemical type formulation introduced by Cohen and Fine. The obtained results reveal strong clustering-type correlations in the studied samples (a predominance of Fe-Fe and Cr-Cr bonds). Moreover, the changes in SRO values observed during thermal processing suggest that the distribution of Cr atoms in an α-iron matrix is strongly temperature dependent.

Temperature dependence of the short-range order parameter for Fe0.90Cr0.10 and Fe0.88Cr0.12 alloys

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Temperature dependence of the short-range order parameter for FeCr and FeCr alloys

The 57Fe Mössbauer spectra for the iron-based solid solutions Fe0.90Cr0.10 and Fe0.88Cr0.12 were measured at different temperatures ranging from 300 K to 900...

Temperature dependence of the short-range order parameter for Fe_0.90Cr_0.10 and Fe_0.88Cr_0.12 alloys

Published Online: Mar 12, 2015

Page range: 35 - 38

Received: Jun 18, 2014

Accepted: Oct 16, 2014

DOI: https://doi.org/10.1515/nuka-2015-0009

Keywords
iron alloys, Mössbauer spectroscopy, nuclear materials, short-range order

© Rafał Idczak, Robert Konieczny

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Temperature dependence of the short-range order parameter for Fe0.90Cr0.10 and Fe0.88Cr0.12 alloys

Published Online: Mar 12, 2015

Page range: 35 - 38

Received: Jun 18, 2014

Accepted: Oct 16, 2014

DOI: https://doi.org/10.1515/nuka-2015-0009

Keywordsiron alloys, Mössbauer spectroscopy, nuclear materials, short-range order

© Rafał Idczak, Robert Konieczny

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Temperature dependence of the short-range order parameter for Fe_0.90Cr_0.10 and Fe_0.88Cr_0.12 alloys

Keywords
iron alloys, Mössbauer spectroscopy, nuclear materials, short-range order