Research on IAF nucleation behavior induced by Ce/Ce-Zr inclusion in high strength steel plate for shipbuilding

Meng Xianghai; Wang Wei; Bi Sheng; Li Yungang

doi:10.7513/j.issn.1004-7638.2022.02.022

Volume 43 Issue 2

May 2022

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Meng Xianghai, Wang Wei, Bi Sheng, Li Yungang. Research on IAF nucleation behavior induced by Ce/Ce-Zr inclusion in high strength steel plate for shipbuilding[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(2): 146-151. doi: 10.7513/j.issn.1004-7638.2022.02.022

Citation:

Meng Xianghai, Wang Wei, Bi Sheng, Li Yungang. Research on IAF nucleation behavior induced by Ce/Ce-Zr inclusion in high strength steel plate for shipbuilding[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(2): 146-151. doi: 10.7513/j.issn.1004-7638.2022.02.022

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Research on IAF nucleation behavior induced by Ce/Ce-Zr inclusion in high strength steel plate for shipbuilding

doi: 10.7513/j.issn.1004-7638.2022.02.022

Meng Xianghai^{1, 2
,},
Wang Wei^{3
,
,},
Bi Sheng¹,
Li Yungang²

1.
Tangshan Polytechnic College, Tangshan 063299, Hebei, China
2.
College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China
3.
Department of Mechanical and Electrical Engineering, Tangshan College, Tangshan 063000, Hebei, China

Received Date: 2021-09-29
Available Online: 2022-05-11
Publish Date: 2022-04-28

Abstract

Abstract

In this paper, the evolution behavior of ferrite induced by inclusions in FH40 ship plate steel after rare earth alloying was studied. The morphology characteristics of rare earth inclusions formed in steel and the mechanism of IAF formation were observed and analyzed by means of scanning electron microscope (SEM) and energy diffraction spectrum (EDS). The results show that the shape of the rare earth composite inclusions is spheroidized after Ce or Ce-Zr composite treatment, and both inclusions can induce the formation of IAF. Al-Ce-O+MnS inclusions formed by Ce can be explained by Mn-poor zone mechanism and inert substrate mechanism, while Ce-Zr-O+MnS inclusions formed by Ce-Zr combined treatment can only be explained by Mn-poor zone mechanism.
- FH40 ship plate steel,
- rare earth treatment,
- inclusion,
- nucleation mechanism,
- intra-granular ferrite

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References(20)

References

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