Some debatable aspects of interpretation of binary phase diagrams playing a key role in the science of alloys are considered. It is shown that the ordering – separation phase transition in binary alloys changes the sign of the chemical interatomic interaction at some temperatures. The mismatch between the mechanism of this process and its representation in the phase diagram is discussed. It is suggested that some concepts on the ranges of the diagram, where the structural changes occur by diffusion, should be revised.
Similar content being viewed by others
References
J. Higgins, R. B. Nicholson, and P. Wilkes, “Precipitation in iron-beryllium systems,” Acta Metall., 22, 201 – 217 (1974).
D. E. Laughlin and J. W. Cahn, “Spinodal decomposition in age-hardening Cu – Ti alloys,” Acta Metall., 23, 329 – 339 (1975).
Ustinovshikov, M. Shirobokova, and B. Pushkarev, “A structural study of the Fe – Cr system alloys,” Acta Mater., 44, 5021 – 5032 (1996).
Y. Ustinovshikov, B. Pushkarev, and I. Igumnov, “Fe-rich portion of the Fe – Cr phase diagram: electron microscopy study,” J. Mater. Sci., 37, 2031 – 2042 (2002).
Y. Ustinovshikov, I. Shabanova, and N. Lomova, “TEM study of the ‘ordering – phase separation’ transition in Ni – Co alloys,” J. Adv. Microsc. Res., 8, 276 – 282 (2013).
Y. Ustinovshikov, “Changes in electronic structure of metallic alloys at the transition ‘ordering – phase separation’,” J. Alloys Compd., 714, 476 – 483 (2017).
Y. Ustinovshikov, “Phase transition ‘ordering – phase separation’ in the Co3V alloy,” J. Alloys Compd., 639, 669 – 674 (2015).
Y. Ustinovshikov, “Phase and structural transformations in the Ni65Mo20Cr15 alloy at changing the temperature of heat treatment,” J. Alloys Compd., 588, 470 – 473 (2014).
Y. Ustinovshikov, “Phase transitions ‘ordering – phase separation’ in alloys of the Ni – Cr system,” Mat. Chem. Phys., 165, 14 – 18 (2015).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 3 – 9, August, 2023.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Ustinovshikov, Y. Binary Phase Diagrams in the Science of Metals. Met Sci Heat Treat 65, 463–469 (2023). https://doi.org/10.1007/s11041-023-00956-5
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11041-023-00956-5