What is it about?
The so called High Entropy Alloys correspond to a new alloy design paradigm which, instead of avoiding, intentionally seeks regions of high concentrations. Unfortunately early reports attributed the special properties observed in these alloys to Entropy, we show here again that the critical factor is enthalpy end not Entropy.
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Why is it important?
Understanding the fundamentals of equilibrium is important for the development of better alloys. As an example, the wrong assumption that Entropy drives equilibrium leads to the limitation of composition to the one in which all elements are in the same quantity. We show here that this restriction is unnecessary.
Perspectives
This was the second result of my collaboration with the group of Prof. Raymundo Arroyave at the Department of Materials Science and Engineering of the Texas A&M University. It was a pleasure to spend this year with them.
Professor Claudio Geraldo Schön
Universidade de Sao Paulo Campus da Capital
Read the Original
This page is a summary of: A proof of concept: Thermodynamics of aluminum – transition metal highly concentrated alloys, Journal of Alloys and Compounds, April 2019, Elsevier,
DOI: 10.1016/j.jallcom.2018.12.068.
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