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Isothermal Precipitation Behavior of Vanadium Carbonitride in V‐, N‐Added Low‐Carbon Steel
Author(s) -
Yang Yong,
Zhang Xiao Feng,
Li Yan Mei,
Huang Zhen Yi
Publication year - 2020
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.202000086
Subject(s) - materials science , precipitation , ferrite (magnet) , isothermal process , interphase , vanadium , carbon steel , metallurgy , crystallography , composite material , thermodynamics , chemistry , physics , corrosion , genetics , biology , meteorology
Herein, the isothermal precipitation behaviors of V(C,N) in ferrite are studied. At 700 °C, the dominant precipitation behavior of V(C,N) is interphase precipitation (IP), whereas at 660 and 620 °C, random precipitation (RP) is dominant. Both IP and RP show the Nishiyama–Wassermann orientation relationship (OR) with ferrite, unlike the common OR between precipitation and ferrite. The size of most precipitated particles varies in the ranges of 5–8 nm at 660 °C and 3–5 nm at 620 °C. The average values of hardness of ferrite grain formed at 700, 660, and 620 °C are 195.1, 237.6, and 278.6 HV, respectively.