Effects of M (M=Ce, Zr, Ce–Zr) Compound Treatment on Characteristics of Inclusions and Microstructure FH40 Ship-Building Steel Ingots

  • Xianghai Meng
  • Yungang LiEmail author
  • Meng Wang
  • Zhe Wang
  • Mengxing Li
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


FH40 ship-building steels with Ce, Zr, Ce–Zr compound treatment were melted in medium frequency vacuum induction furnace. The characteristics such as particle size distribution, average particle size, total amount, and chemical composition of FH40 ship-building steels were investigated by OM and SEM-EDS methods. The results showed after Ce, Zr, Ce–Zr compound treatment, the average particle size decreased from 2.752 to 2.567 μm, the microstructures of experimental steels were refined remarkably, and inclusions distributed more uniformly, while the total amount of inclusions increased from 213.5/mm2 to 672.8/mm2. A1–O in the experimental steel containing 0.0053%Ce and 0.0055%Zr could be transformed into Ce–Zr–O being 33.6%. The inclusions except Al–O can induce the growth of IAF nucleation. Further analysis showed that the morphology of inclusions was affected by the amount of alloying agent addition, the misfit, and particle interfacial energy.


Ship-building steel Ce Zr Inclusions IAF 



Foundation item: Project supported by the National Natural Science Foundation of China (51474088); Project supported by Tangshan outstanding young and middle-aged experts going abroad training


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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Xianghai Meng
    • 1
    • 2
  • Yungang Li
    • 1
    Email author
  • Meng Wang
    • 2
  • Zhe Wang
    • 1
  • Mengxing Li
    • 1
  1. 1.School of Metallurgy and EnergyNorth China University of Science and TechnologyTangshanChina
  2. 2.Tangshan Polytechnic CollegeTangshanChina

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