@article{d07ed6b8fcd945518ba2bbf235b8c29b,
title = "Sublattice alloy design of high-strength steels: Application of clustering and nanoscale precipitation of interstitial and substitutional solutes",
abstract = "Recent advances in high-strength steels for automobile applications or surface-hardened steels have attracted interest on controlling the nanoscale dispersion of alloy carbides/nitrides in ferrite. Particularly, B1-type carbide/nitride precipitation and metastable alloy clustering can be understood as the coupled ordering and compositional phase separation of interstitial alloying elements i and substitutional alloying elements s, i.e., {"}spinodal ordering{"}. In this paper, the behavior of i–s clustering and alloy carbide/nitride precipitation is revealed by nanoscale characterization, theoretical calculations, and evaluations of mechanical properties. Physical measurements and density function theory-based analyses revealed that strong i–s attractive interaction is responsible for metastable i–s clustering, which clearly indicated {"}hidden{"} nanoscale inhomogeneity in solid solutions. Further, we discuss a concept termed interstitial sublattice engineering in bulk and at interphase boundary for strengthening of alloyed steels.",
keywords = "Alloying, Carbide, Clustering, Ferrite, Interface, Nitride, Precipitation, Steel",
author = "Tadashi Furuhara and Yongjie Zhang and Mitsutaka Sato and Goro Miyamoto and Masanori Enoki and Hiroshi Ohtani and Tokuteru Uesugi and Hiroshi Numakura",
note = "Funding Information: This work was financially supported by CREST Basic Research Program “Creation of Innovative Functions of Intelligent Materials on the Basis of Element Strategy” No. JPMJCR1074 and Collaborative Research Based on Industrial Demand Program “Heterogeneous Structure Control: Towards Innovative Development of Metallic Structural Materials” No. JPMJSK1613 funded by the Japan Science and Technology Agency , Japan. Partial support from JSPS Grant-in-Aid for Scientific Research (B) No. 23360316 (2011–2013) and (A) No. 17H01330 (2017-2019) , Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) No. 18H05456 (2018-2022) funded by the Japan Society for the Promotion of Science are also gratefully acknowledged. Publisher Copyright: {\textcopyright} 2022",
year = "2023",
month = jan,
day = "15",
doi = "10.1016/j.scriptamat.2022.115063",
language = "English",
volume = "223",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Limited",
}