Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

Park, Jae Young; Hwang, Nong‐Moon; Seo, Bosung; Im, Hyeon-Tae; Park, Ki Beom; Park, Chang-Soo; Mo, Chan Bin; Park, Hyung-Ki; Park, Kwangsuk

doi:10.1002/srin.202200236

Cited by 2 publications

(2 citation statements)

References 56 publications

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“…Zhang et al [ 21 ] reported that for Fe–10Cr–1.2Si (wt%) steel, a sufficient amount of Si could provide nucleation sites for the original Cr 2 O 3 to decrease the grain size. Park et al [ 22 ] reported that Fe–3Si–5.5Cr (wt%) steel has inner and outer oxide layers with SiO 2 and Cr 2 O 3 , which improves its oxidation resistance.…”

Section: Introductionmentioning

confidence: 99%

High‐Temperature Oxidation Behavior of Cr‐Si Alloyed Press‐Hardened Steel in Comparison with 22MnB5 Steel

Zhang,

Wang,

et al. 2024

steel research int.

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In the present study, a Cr–Si‐alloyed coating‐free press‐hardened steel (CF–PHS) is investigated and compared with the conventional 22MnB5 steel through a 60 min oxidation experiment at 1000–1200 °C. Compared to the 22MnB5 steel, the CF–PHS exhibits lower weight gain at 1000–1150 °C but a higher weight gain at 1200 °C. In the results, using scanning electron microscopy, energy‐dispersive spectroscopy, and X‐ray diffraction, it is revealed that the outer oxide layer of the CF–PHS consisted of Fe2O3 and Fe3O4, while its inner oxide layer is enriched with FeCr2O4 and Fe2SiO4—crucial for the oxidation resistance of the CF–PHS. The outer oxide layer of 22MnB5 comprises Fe2O3, Fe3O4, and FeO, while the inner layer contains low concentrations of Cr and Si. The mechanism of superior high‐temperature oxidation resistance of CF–PHS compared to 22MnB5 at 1000–1150 °C reveals that the existence of FeCr2O4 and Fe2SiO4 inhibits the diffusion of Fe2+ and O2−, effectively hindering the oxidation progress. Moreover, the oxidation resistance of the CF–PHS at 1200 °C deteriorates owing to the melting of Fe2SiO4 at 1200 °C, which significantly accelerates the diffusion of Fe2+ and O2−, thus exacerbating the oxidation of CF–PHS.

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Section: Introductionmentioning

confidence: 99%

High‐Temperature Oxidation Behavior of Cr‐Si Alloyed Press‐Hardened Steel in Comparison with 22MnB5 Steel

Zhang,

Wang,

et al. 2024

steel research int.

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“…), Cr [9][10][11] and Si [12] significantly improve the oxidation resistance of steel. Jae-Young Park et al [13] found that the oxidation of Fe-Si-Cr alloys at 650 • C produced a double-layer structure oxide with Cr 2 O 3 in the outer layer and SiO 2 in the inner layer. Tianyuan Wang et al [14] found that Si makes the oxide layer flat and reduces spalling, which improves the antioxidant performance at 800 • C more than five times.…”

Section: Introductionmentioning

confidence: 99%

Studying the Effect of Cr and Si on the High-Temperature Oxidation-Resistance Mechanism of Hot Stamping Steel

Wu,

Zhang,

Zhu

et al. 2023

Metals

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The surface of hot stamping steel is severely oxidized during heating, holding, and transfer from the heating furnace to the stamping die in the production of traditional automotive parts. Coating-free hot stamping steel with Cr and Si elements exhibits excellent oxidation resistance during hot stamping without the protection of a surface coating. This paper investigates the oxidation behavior of three types of hot stamping steel at 800–1200 °C. The results show that although Cr-Si hot stamping steel performs excellently short-term (≤7.5 min) for oxidation resistance, its long-term (≥15 min) or high-temperature (≥1100 °C) oxidation resistance is much lower than that of the conventional hot stamping steel 22MnB5, affecting the production and surface quality control of the new coating-free Cr-Si hot stamping steel. By analyzing the oxidation kinetics and characterizing the structure of oxide layers in hot stamping steel, it was found that the structural change in the Cr and Si element enrichment layer between the oxide scale and the substrate varied in oxidation performance at different temperatures. When the oxidation temperature was below 1000 °C, the solid Cr and Si enrichment layer acted as a barrier to prevent the diffusion of Fe ions. When the oxidation temperature exceeded 1100 °C, the molten Cr and Si enrichment layer effectively adapted to the substrate and avoided blistering. Meanwhile, Fe2SiO4 penetrated the Fe oxide layer along the grain boundary and became a rapidly diffusing channel of Fe ions, contributing to a significant increase in the oxidation rate.

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Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/srin.202200236.

Cited by 2 publications

References 56 publications

High‐Temperature Oxidation Behavior of Cr‐Si Alloyed Press‐Hardened Steel in Comparison with 22MnB5 Steel

High‐Temperature Oxidation Behavior of Cr‐Si Alloyed Press‐Hardened Steel in Comparison with 22MnB5 Steel

Studying the Effect of Cr and Si on the High-Temperature Oxidation-Resistance Mechanism of Hot Stamping Steel

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