Обзорная статья

The Grain Boundary Wetting Phenomena in the Ti-Containing High-Entropy Alloys: A Review

Boris B. StraumalChernogolovka Scientific Center of the Russian Academy of Sciences, Lesnaja Str. 9, 142432 Chernogolovka, RussiaAnna KornevaInstitute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta Str. 25, 30-059 Cracow, PolandAlexei KuzminInstitute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV-1063 Riga, LatviaGabriel A. LópezPhysics Department, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, SpainEugen RabkinDepartment of Materials Science and Engineering, Technion—Israel Institute of Technology, Haifa 3200003, IsraelA. B. StraumalOsipyan Institute of Solid State Physics of the Russian Academy of Sciences, Ac. Osipyan Str. 2, 142432 Chernogolovka, RussiaGregory GersteinInstitute of Materials Science, Leibnitz University of Hannover an der Universität 2, 30823 Garbsen, GermanyА. С. ГорнаковаOsipyan Institute of Solid State Physics of the Russian Academy of Sciences, Ac. Osipyan Str. 2, 142432 Chernogolovka, Russia

2021en

ABI

Аннотация

In this review, the phenomenon of grain boundary (GB) wetting by melt is analyzed for multicomponent alloys without principal components (also called high-entropy alloys or HEAs) containing titanium. GB wetting can be complete or partial. In the former case, the liquid phase forms the continuous layers between solid grains and completely separates them. In the latter case of partial GB wetting, the melt forms the chain of droplets in GBs, with certain non-zero contact angles. The GB wetting phenomenon can be observed in HEAs produced by all solidification-based technologies. GB leads to the appearance of novel GB tie lines Twmin and Twmax in the multicomponent HEA phase diagrams. The so-called grain-boundary engineering of HEAs permits the use of GB wetting to improve the HEAs’ properties or, alternatively, its exclusion if the GB layers of a second phase are detrimental.

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Идентификаторы

DOI: 10.3390/met11111881

Цитирования и источники

Цитирований: 2Использованных источников: 0

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