Engineering atomic-level complexity in high-entropy and complex concentrated alloys
Name
s41467-019-10012-7.pdf
Description
Published version
Size
1.47 MB
Format
Adobe PDF
Checksum (MD5)
889265a82e5c953836a4935a7093843f
Author(s)
Oh, Hyun Seok
Kim, Sang Jun
Odbadrakh, Khorgolkhuu
Ryu, Wook Ha
Yoon, Kook Noh
Mu, Sai
Körmann, Fritz
Ikeda, Yuji
Tasan, Cemal Cem
Raabe, Dierk
Date Issued
2019
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Version
Final published version
Abstract
© 2019, The Author(s). Quantitative and well-targeted design of modern alloys is extremely challenging due to their immense compositional space. When considering only 50 elements for compositional blending the number of possible alloys is practically infinite, as is the associated unexplored property realm. In this paper, we present a simple property-targeted quantitative design approach for atomic-level complexity in complex concentrated and high-entropy alloys, based on quantum-mechanically derived atomic-level pressure approximation. It allows identification of the best suited element mix for high solid-solution strengthening using the simple electronegativity difference among the constituent elements. This approach can be used for designing alloys with customized properties, such as a simple binary NiV solid solution whose yield strength exceeds that of the Cantor high-entropy alloy by nearly a factor of two. This study provides general design rules that enable effective utilization of atomic level information to reduce the immense degrees of freedom in compositional space without sacrificing physics-related plausibility.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/s41467-019-10012-7
