@article{097e95d62fec4dde8434b6eeebee557c,
title = "Solute cluster-induced precipitation and resultant surface hardening during nitriding of Fe–Al–V alloys",
abstract = "The small amount (0.1 at%) of V addition to Fe–Al alloys promotes AlN precipitation during nitriding and results in substantial surface hardening, in contrast to the normal sluggish precipitation kinetics of AlN during nitriding of Fe–Al binary alloys. The addition of V to Fe–Al alloys can increase the surface hardness to a greater extent than the addition of Ti. First-principles calculations of the interaction energy between an Al atom and an N–s cluster (s = V, Ti, Cr, or Al) show that a V–N cluster has an attractive interaction with an Al atom, and this interaction is stronger than that between a Ti–N cluster and an Al atom, in good agreement with the greater hardening induced by V addition than by Ti addition. These experiments and calculations indicate that solute clusters not only contribute directly to the hardening but also induce alloy nitride precipitation.",
keywords = "Clustering, Element interaction, Nitriding, Precipitation, Steel",
author = "Goro Miyamoto and Yasuhiro Tateyama and Tokuteru Uesugi and Yuichiro Hayasaka and Tadashi Furuhara",
note = "Funding Information: This research was supported by the JST “Collaborative Research Based on Industrial Demand” Grant No. JPMJSK1613 , Japan and by the Tohoku University Microstructural Characterization Platform in Nanotechnology Platform Project sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. T.F. and G.M. gratefully acknowledge the financial support provided by the Ministry of Education, Culture, Sports, Science and Technology through Grants-in-Aid for Grant-in-Aid for Scientific Research (A) (Nos. 17H01330 , 2017-2019), Grant-in-Aid for Scientific Research (B) (Nos. 19H02473 , 2019-2021), Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) ( 18H05456 , 2018-2022) . Publisher Copyright: {\textcopyright} 2021",
year = "2021",
month = oct,
doi = "10.1016/j.scriptamat.2021.114121",
language = "English",
volume = "203",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Limited",
}