Peng Han, Zhipeng Liu, Zhenjia Xie, Hua Wang, Yaohui Jin, Xuelin Wang, and Chengjia Shang, Influence of band microstructure on carbide precipitation behavior and toughness of 1 GPa-grade ultra-heavy gauge low-alloy steel, Int. J. Miner. Metall. Mater.,(2023).
Cite this article as:
Peng Han, Zhipeng Liu, Zhenjia Xie, Hua Wang, Yaohui Jin, Xuelin Wang, and Chengjia Shang, Influence of band microstructure on carbide precipitation behavior and toughness of 1 GPa-grade ultra-heavy gauge low-alloy steel, Int. J. Miner. Metall. Mater.,(2023).
Research Article

Influence of band microstructure on carbide precipitation behavior and toughness of 1 GPa-grade ultra-heavy gauge low-alloy steel

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  • Corresponding author:

    Zhenjia Xie    E-mail:

  • Received: 29 September 2022Revised: 26 December 2022Accepted: 6 January 2023Available online: 10 January 2023
  • This study investigated the influence of band microstructure induced by centerline segregation on carbide precipitation behavior and toughness in an 80 mm-thick 1 GPa low-carbon low-alloy steel plate. The quarter-thickness (1/4t) and half-thickness (1/2t) regions of the plate exhibited similar ductility and toughness after quenching. After tempering, the 1/4t region exhibited ~50% and ~25% enhancements in both the total elongation and low-temperature toughness at −40°C, respectively, without a decrease in yield strength, whereas the toughness of the 1/2t region decreased by ~46%. After quenching, both the 1/4t and 1/2t regions exhibited lower bainite and lath martensite concentrations, but only the 1/2t region exhibited microstructure bands. Moreover, the tempered 1/4t region featured uniformly dispersed short rod-like M23C6 carbides, and spherical MC precipitates with diameters of ~20–100 nm and <20 nm, respectively. The uniformly dispersed nanosized M23C6 carbides and MC precipitates contributed to the balance of high strength and high toughness. The band microstructure of the tempered 1/2t region featured a high density of large needle-like M3C carbides. The length and width of the large M3C carbides were ~200–500 nm and ~20–50 nm, respectively. Fractography analysis revealed that the high density of large carbides led to delamination cleavage fracture, which significantly deteriorated toughness.
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  • [1]
    Z.J. Xie, C.J. Shang, X.L. Wang, X.M. Wang, G. Han, and R.D.K. Misra, Recent progress in third-generation low alloy steels developed under M3 microstructure control, Int. J. Miner. Metall. Mater., 27(2020), No. 1, p. 1. doi: 10.1007/s12613-019-1939-x
    J. Hu, L.X. Du, Y. Dong, Q.W. Meng, and R.D.K. Misra, Effect of Ti variation on microstructure evolution and mechanical properties of low carbon medium Mn heavy plate steel, Mater. Charact., 152(2019), p. 21. doi: 10.1016/j.matchar.2019.04.004
    J. Hu, L.X. Du, W. Xu, et al., Ensuring combination of strength, ductility and toughness in medium-manganese steel through optimization of nano-scale metastable austenite, Mater. Charact., 136(2018), p. 20. doi: 10.1016/j.matchar.2017.11.058
    X. Chen, Q.W. Cai, B.S. Xie, Y. Yun, and Z.Y. Zhou, Simulation of microstructure evolution in ultra-heavy plates rolling process based on Abaqus secondary development, Steel Res. Int., 89(2018), No. 12, art. No. 1800409. doi: 10.1002/srin.201800409
    S.K. Choudhary, S. Ganguly, A. Sengupta, and V. Sharma, Solidification morphology and segregation in continuously cast steel slab, J. Mater. Process. Technol., 243(2017), p. 312. doi: 10.1016/j.jmatprotec.2016.12.030
    J. Li, Y.H. Sun, H.H. An, and P.Y. Ni, Shape of slab solidification end under non-uniform cooling and its influence on the central segregation with mechanical soft reduction, Int. J. Miner. Metall. Mater., 28(2021), No. 11, p. 1788. doi: 10.1007/s12613-020-2089-x
    Z.J. Xie, Q. Li, Z.P. Liu, et al., Enhanced ductility and toughness by tailoring heterogenous microstructure in an ultra-heavy gauge high strength steel with severe centerline segregation, Mater. Lett., 323(2022), art. No. 132525. doi: 10.1016/j.matlet.2022.132525
    F.J. Guo, X.L. Wang, W.L. Liu, et al., The influence of centerline segregation on the mechanical performance and microstructure of X70 pipeline steel, Steel Res. Int., 89(2018), No. 12, art. No. 1800407. doi: 10.1002/srin.201800407
    A. Nagao, T. Ito, and T. Obinata, Development of YP 960 and 1100 MPa class ultra high strength steel plates with excellent toughness and high resistance to delayed fracture for construction and industrial machinery, JFE Technol. Rep., 11(2008), p. 13.
    Z.J. Xie, Y.P. Fang, G. Han, H. Guo, R.D.K. Misra, and C.J. Shang, Structure-property relationship in a 960 MPa grade ultrahigh strength low carbon niobium–vanadium microalloyed steel: The significance of high frequency induction tempering, Mater. Sci. Eng. A, 618(2014), p. 112. doi: 10.1016/j.msea.2014.08.072
    D. Bhattacharya, G.P. Poddar, and S. Misra, Centreline defects in strips produced through thin slab casting and rolling, Mater. Sci. Technol., 32(2016), No. 13, p. 1354. doi: 10.1080/02670836.2015.1125600
    C.T. Zheng and Z. Chen, Carbon isoactivity curves in austenite for Fe–Mn–C alloys and Fe–Si–C alloys and their applications, Trans. Matert. Heat Treat., 10(1989), No. 1, p. 79.
    J. Emo, P. Maugis, and A. Perlade, Austenite growth and stability in medium Mn, medium Al Fe–C–Mn–Al steels, Comput. Mater. Sci., 125(2016), p. 206. doi: 10.1016/j.commatsci.2016.08.041
    M.J. Santofimia, L. Zhao, R. Petrov, C. Kwakernaak, W.G. Sloof, and J. Sietsma, Microstructural development during the quenching and partitioning process in a newly designed low-carbon steel, Acta Mater., 59(2011), No. 15, p. 6059. doi: 10.1016/j.actamat.2011.06.014
    Z.J. Xie, S.F. Yuan, W.H. Zhou, J.R. Yang, H. Guo, and C.J. Shang, Stabilization of retained austenite by the two-step intercritical heat treatment and its effect on the toughness of a low alloyed steel, Mater. Des., 59(2014), p. 193. doi: 10.1016/j.matdes.2014.02.035
    J. Pak, D.W. Suh, and H.K.D.H. Bhadeshia, Promoting the coalescence of bainite platelets, Scr. Mater., 66(2012), No. 11, p. 951. doi: 10.1016/j.scriptamat.2012.02.041
    K. Bhadeshia, E. Keehan, L. Karlsson, and H. Andren, Coalesced bainite, Trans. Indian Inst. Met., 59(2006), No. 5, p. 689.
    K.H. Kuo and C.L. Jia, Crystallography of M23C6 and M6C precipitated in a low alloy steel, Acta Metall., 33(1985), No. 6, p. 991. doi: 10.1016/0001-6160(85)90193-2
    L.H. Su, H.J. Li, C. Lu, et al., Transverse and z-direction CVN impact tests of X65 line pipe steels of two centerline segregation ratings, Metall. Mater. Trans. A, 47(2016), No. 8, p. 3919. doi: 10.1007/s11661-016-3578-4
    J. Wang, F. Guo, Z. Wang, Z. Xie, C. Shang, and X. Wang, Influence of centerline segregation on the crystallographic features and mechanical properties of a high-strength low-alloy steel, Mater. Lett., 267(2020), art. No. 127512. doi: 10.1016/j.matlet.2020.127512
    X. Li, X. Ma, S.V. Subramanian, C. Shang, and R.D.K. Misra, Influence of prior austenite grain size on martensite–austenite constituent and toughness in the heat affected zone of 700 MPa high strength linepipe steel, Mater. Sci. Eng. A, 616(2014), p. 141. doi: 10.1016/j.msea.2014.07.100
    C.F. Wang, M.Q. Wang, J. Shi, W.J. Hui, and H. Dong, Effect of microstructural refinement on the toughness of low carbon martensitic steel, Scr. Mater., 58(2008), No. 6, p. 492. doi: 10.1016/j.scriptamat.2007.10.053
    E. Bouyne, H.M. Flower, T.C. Lindley, and A. Pineau, Use of EBSD technique to examine microstructure and cracking in a bainitic steel, Scr. Mater., 39(1998), No. 3, p. 295. doi: 10.1016/S1359-6462(98)00170-5
    C.F. Wang, M.Q. Wang, J. Shi, W.J. Hui, and H. Dong, Microstructural characterization and its effect on strength of low carbon martensitic steel, Iron Steel, 42(2007), No. 11, p. 57.
    D. Liu, M. Luo, B. Cheng, R. Cao, and J. Chen, Microstructural evolution and ductile-to-brittle transition in a low-carbon MnCrMoNiCu heavy plate steel, Metall. Mater. Trans. A, 49(2018), No. 10, p. 4918. doi: 10.1007/s11661-018-4823-9
    S.L. Long, Y.L. Liang, Y. Jiang, Y. Liang, M. Yang, and Y.L. Yi, Effect of quenching temperature on martensite multi-level microstructures and properties of strength and toughness in 20CrNi2Mo steel, Mater. Sci. Eng. A, 676(2016), p. 38. doi: 10.1016/j.msea.2016.08.065
    S. Morito, H. Yoshida, T. Maki, and X. Huang, Effect of block size on the strength of lath martensite in low carbon steels, Mater. Sci. Eng. A, 438(2006), p. 237.
    X.C. Li, J.X. Zhao, J.H. Cong, et al., Machine learning guided automatic recognition of crystal boundaries in bainitic/martensitic alloy and relationship between boundary types and ductile-to-brittle transition behavior, J. Mater. Sci. Technol., 84(2021), p. 49. doi: 10.1016/j.jmst.2020.12.024
    J.L. Wang, R. Janisch, G.K.H. Madsen, and R. Drautz, First-principles study of carbon segregation in bcc iron symmetrical tilt grain boundaries, Acta Mater., 115(2016), p. 259. doi: 10.1016/j.actamat.2016.04.058
    W. Yan, W. Sha, L. Zhu, W. Wang, Y.Y. Shan, and K. Yang, Delamination fracture related to tempering in a high-strength low-alloy steel, Metall. Mater. Trans. A, 41(2010), No. 1, p. 159. doi: 10.1007/s11661-009-0068-y
    H.G. Zhong, R.J. Wang, Q.Y. Han, et al., Solidification structure and central segregation of 6Cr13Mo stainless steel under simulated continuous casting conditions, J. Mater. Res. Technol., 20(2022), p. 3408. doi: 10.1016/j.jmrt.2022.08.115
    C.S. Wang, J.F. Guo, G.L. Li, and C.J. Shang, Influence of central segregation control on low temperature toughness of steel, Iron Steel, 54(2019), No. 8, p. 202.
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