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Figure 1
Schematic illustration of the model of the simplest type defect in multi-component alloys such as High Entropy alloys (HEAs) [4,8]
High-Entropy Alloys (HEAs) consists of multi-component materials with an approximately equiatomic ratio of components [1-3]. These alloys have a high entropy of mixing, which distinguishes them from conventional alloys. Solid solutions with multi-principal elements have generally been found to be more stable than intermetallic compounds at elevated temperatures because of their large entropies of mixing. Some researchers have defined a HE material as one that has at least five principal elements, each of which has an atomic concentration between 5% and 35%.
Multi-component alloys with equiatomic compositions, such as HEAs, have a potential to possess superior phase stability against irradiation damage because of the special defect structure and/or particular atomic level stress [4,5]. We investigate the irardiation damage in multi-component equimolar alloys (MEAs) and HEAs because these materials may be a new type of nuclear material that do not show irradiation damage problems because of faster irradiation damage annihilation and/or evaluation processes compared to conventional crystalline materials [6-8].
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[4] T. Nagase, Advanced materials design by irradiation of high energy particles, Progress in Advanced Structural and Functional Materials Design, Ed., T. Kakeshita, Springer, 2012. pp. 137-153. ISBN 978-4-431-54063-2, http://www.springer.com/materials/structural+materials/book/978-4-431-54063-2
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[6] T. Nagase, S. Anada, P. D. Rack, J. H. Noh, H. Yasuda, H. Mori, T. Egami, Intermetallics, 26 (2012) 122-130., http://dx.doi.org/10.1016/j.intermet.2012.02.015
[7] T. Nagase, S. Anada, P. D. Rack, J. H. Noh, H. Yasuda, H. Mori, T. Egami, Intermetallics, 38 (2013) 70-79., http://dx.doi.org/10.1016/j.intermet.2013.02.009
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