Fundamental changes in notions of the metallic alloy’s nature
Udmurt Federal Research Center of Russian Academy of Sciences, Physical-Technical Institute, Russia, 426000 Izhevsk, 34 Baramzina St.
Review Article
GSC Advanced Research and Reviews, 2023, 17(03), 156–162.
Article DOI: 10.30574/gscarr.2023.17.3.0471
Publication history:
Received on 04 November 2023; revised on 13 December 2023; accepted on 16 December 2023
Abstract:
The article "Fundamental changes in notions of the metallic alloys nature" is a collection of ideas and experimental results that unequivocally indicate that modern ideas about metallic alloys should become to history of alloys. Here we present to the reader the results of experiments obtained on two binary alloys Ni75Mo25 and Ni88Al12, as well as on one ternary alloy Ni53Mo35Al12. These data are identical to the data we presented earlier obtained on alloys of 17 binary systems and seven ternary alloys. Briefly, the main conclusions of the experiments are as follows:
· Interatomic chemical interactions exist in all metal alloys at temperatures of both solid and liquid states.
· Chemical bonds in alloys have an amazing property to change their sign at a certain temperature (there is a phase transition "ordering - separation").
· The reason for this transition is the electronic transition "ionic bond ↔ covalent bond".
· The process of formation of new phases in alloys begins with the formation of diffusion micro-pairs formed during the melting of the alloy.
Such considerable differences between the existing notions about the nature of alloys and those revealed in this work should lead to changes in the technology of heat treatment of alloys, in the binary phase diagrams and to a change in the principles of creating new alloys.
Keywords:
Alloys; Chemical bonds; Transmission electron microscopy; Microstructure; Phase transitions
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Copyright © 2023 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0
