@article{d5a23f9e212d4c62b067ad0d2c9afb47,
title = "Hierarchical microstructure strengthening in a single crystal high entropy superalloy",
abstract = "A hierarchical microstructure strengthened high entropy superalloy (HESA) with superior cost specific yield strength from room temperature up to 1,023 K is presented. By phase transformation pathway through metastability, HESA possesses a hierarchical microstructure containing a dispersion of nano size disordered FCC particles inside ordered L12 precipitates that are within the FCC matrix. The average tensile yield strength of HESA from room temperature to 1,023 K could be 120 MPa higher than that of advanced single crystal superalloy, while HESA could still exhibit an elongation greater than 20%. Furthermore, the cost specific yield strength of HESA can be 8 times that of some superalloys. A template for lighter, stronger, cheaper, and more ductile high temperature alloy is proposed.",
author = "Chen, {Yung Ta} and Chang, {Yao Jen} and Hideyuki Murakami and Taisuke Sasaki and Kazuhiro Hono and Li, {Chen Wei} and Koji Kakehi and Yeh, {Jien Wei} and Yeh, {An Chou}",
note = "Funding Information: Authors would to like thank Dr. K. Kawagishi and Mr. Y. Takada from Superalloys and High Temperature Materials Group at National Institute for Materials Science (NIMS) in Japan for single crystal casting supply, Assistant Professor F. Sun at Tohoku University for some comments and suggestions on the manuscript. Also, Y.T. Chen would like to thank NIMS for the provision of the international collaborative graduate program (ICGP) scholarship. This work is supported by NIMS under the International Cooperative Graduate Program; funding supports from Ministry of Science and Technology (MOST) in Taiwan under Grant MOST108-2218-E-007-005, and MOST109-2634-F-007-024; the “High Entropy Materials Center” from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education. Publisher Copyright: {\textcopyright} 2020, The Author(s).",
year = "2020",
month = dec,
day = "1",
doi = "10.1038/s41598-020-69257-8",
language = "English",
volume = "10",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",
}