A Future Life of Binary Phase Diagrams  

作　　者：Yuri Ustinovshikov Yuri Ustinovshikov(Udmurt Federal Research Center of Russian Academy of Sciences, Izhevsk, Russia)

机构地区：[1]Udmurt Federal Research Center of Russian Academy of Sciences, Izhevsk, Russia

出　　处：《Advances in Materials Physics and Chemistry》2024年第8期123-136,共14页材料物理与化学进展（英文）

摘　　要：The article raises the question of what to do with one of the main achievements of metal science in recent years—binary phase diagrams. These diagrams play a key role in the science of alloys and therefore their reliability must be complete. However, the discovery of the “ordering-separation” phase transition, which showed that in binary alloys at certain temperatures the sign of the chemical interatomic interaction changes (and, consequently, the microstructure changes), forces us to reconsider our ideas about those areas. Currently, these areas are designated on diagrams as areas of a “disordered solid solution.” This article proposes, using transmission electron microscopy, to study all the so-called solid solution regions, and apply the results obtained to the studied regions of the phase diagram.The article raises the question of what to do with one of the main achievements of metal science in recent years—binary phase diagrams. These diagrams play a key role in the science of alloys and therefore their reliability must be complete. However, the discovery of the “ordering-separation” phase transition, which showed that in binary alloys at certain temperatures the sign of the chemical interatomic interaction changes (and, consequently, the microstructure changes), forces us to reconsider our ideas about those areas. Currently, these areas are designated on diagrams as areas of a “disordered solid solution.” This article proposes, using transmission electron microscopy, to study all the so-called solid solution regions, and apply the results obtained to the studied regions of the phase diagram.

关 键 词：Phase Transformation “Ordering-Separation” Electronic Transition “Ionic Bond ↔ Covalent Bond” Binary Phase Diagrams Transmission Electron Microscopy 

分 类 号：TG1[金属学及工艺—金属学]