Year: 2021
Type: article
Abstract: 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.
Source: Metals
DOI: 10.3390/met11111881
Institutions: Russian Academy of Sciences, Osipyan Institute of Solid State Physics RAS, Scientific Center of RAS in Chernogolovka, Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Institute of Solid State Physics, UL, University of Latvia, University of the Basque Country, Technion – Israel Institute of Technology, Leibniz University Hannover
Language: English
Topic: High Entropy Alloys Studies
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,944
Funder: Euskal Herriko Unibertsitatea
Awards: G288677500, G2895065310, G631620673
OpenAlex ID: W3215068599