High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel

Hao, Mingxin; Sun, B.Z.; Wang, Hao

doi:10.3390/ma13030509

Cited by 27 publications

(27 citation statements)

References 35 publications

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“…At the same time, MC (VC) carbides themselves do not have a significant effect on the oxidation kinetics because, as can be seen from the Gibbs free energy calculations (Figure 18), they oxidize last, slowly decompose into the inner oxide sublayer during oxidation, vanadium slowly diffuses into spinel oxides due to the decomposition of carbides and increases the density of the inner oxide sublayer. At the same time, it has been demonstrated [35,49] that silicon is also incorporated into the spinel oxide.…”

Section: Discussionmentioning

confidence: 99%

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High-Temperature Oxidation Behaviour of AISI H11 Tool Steel

Balaško

Vončina

Burja

et al. 2021

Metals

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The high-temperature oxidation of hot-work tool steel AISI H11 was studied. The high-temperature oxidation was investigated in two conditions, the soft annealed condition, and the hardened and tempered condition. First, calculations of the compositions of the oxide layers formed were carried out using the CALPHAD method. The samples were oxidised in a chamber furnace and in a simultaneous thermal analysis instrument, for 100 h in the temperature range between 400 °C and 700 °C. The first samples were used for metallographic (optical microscopy and scanning electron microscopy) and X-ray diffraction analysis of the formed oxide layers, and the second ones for the analysis of the oxidation kinetics by thermogravimetric analysis. Equations describing the high-temperature oxidation kinetics were derived. The kinetics can be described by three mathematical functions, namely: exponential, parabolic, and cubic. However, which function best describes the kinetics depends on the oxidation temperature and the thermal condition of the steel. Hardened and tempered samples have been shown to oxidise less, resulting in a slower oxidation rate. The oxide layers consist of three sublayers, the inner one being spinel-like oxide (Fe, Cr)3O4, the middle one a mixture of magnetite and hematite and the outer one of hematite. At 700 °C there is also some wüstite in the inner oxide sublayer of the soft annealed sample.

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Section: Discussionmentioning

confidence: 99%

“…Regarding the high-temperature oxidation of steels, many studies [21,[28][29][30][31][32][33][34][35][36][37] in which the high-temperature oxidation of various steels has been investigated have been carried out. Many ways have been proposed to calculate the rate constant of oxidation kinetics.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Oxidation Behaviour of AISI H11 Tool Steel

Balaško

Vončina

Burja

et al. 2021

Metals

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“…Samples were then polished with 2.5# diamond polishing paste for 30 min. The surface of each specimen was rinsed with alcohol prior to air drying and etching with 2.7% (v/v) hydrochloric acid in ethanol [18]. Cross-sectional morphology was observed using OLYMPUS-BX53M metallographic microscope.PS software was used to count the pixels of each oxide phase in the metallographic photos, and then the proportion of each oxide phase calculated.…”

Section: Experimental Procedures 21 Metallographymentioning

confidence: 99%

Effect of Oxide Scale Microstructure on Atmospheric Corrosion Behavior of Hot Rolled Steel Strip

Sun

Liu

et al. 2021

Coatings

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The atmospheric corrosion behavior of a hot-rolled strip with four types (I–IV) of oxide scale was investigated using the accelerated wet–dry cycle corrosion test. Corrosion resistance and porosity of oxide scale were studied by potentiometric polarization measurements. Characterization of samples after 80 cycles of the wet–dry corrosion test showed that scale comprised wüstite and magnetite had strongest corrosion resistance. Oxide scale composed of inner magnetite/iron (>70%) and an outer magnetite layer had the weakest corrosion resistance. The corrosion kinetics (weight gain) of each type of oxide scale followed an initial linear and then parabolic (at middle to late corrosion) relationship. This could be predicted by a simple kinetic model which showed good agreement with the experimental results. Analysis of the potentiometric polarization curves, obtained from oxide coated steel electrodes, revealed that the type I oxide scale had the highest porosity, and the corrosion mechanism resulted from the joint effects of electrochemical behavior and the porosity of the oxide scale. In the initial stage of corrosion, the corrosion product nucleated and an outer rust layer formed. As the thickness of outer rust layer increased, the corrosion product developed on the scale defects. An inner rust layer then formed in the localized pits as crack growth of the scale. This attacked the scale and expanded into the substrate during the later stage of corrosion. At this stage, the protective effect of the oxide scale was lost.

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“…oxidation of low-alloy steels with a Cr content of 1% or less are insigni cant. Mingxin Hao et.al [9] conducted temperature-dependent oxidation experiments of Fe-1Cr-0.2Si steel and Fe-0Cr-0.2Si steel to closely examine how the Cr content of the base material affects the oxidation behavior. However, from the point of view of the oxidation difference according to the Cr content, it was judged that the used steel type was insu cient, and the change of the oxide layer according to the oxidation time was not optically shown.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cr Content on the High Temperature Oxidation of Low Alloy Steels

Kwon

Park

Choi

et al. 2023

Preprint

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In the case of low carbon steel (AISI 1015, AISI 8617, AISI 4115 steel), the high-temperature oxidation behavior at different temperatures (600, 700, 800, 900, 1000 ℃) was studied by mass gain analysis, phase analysis (metallographic microscope, energy-dispersive spectroscopy, and x-ray diffraction). The oxidation process was performed from 2 to 100 min. As the oxidation time increased, the trend of mass gain per unit area switched from linear to parabolic law regardless of steel grades used in this study. As the chromium content increases, the duration of time during which the oxidation rate follows a linear relationship decreases. The structure of oxides can generally be classified into two types: outer oxide and inner oxide. The outward diffusion of Fe cations primarily leads to the formation of outer oxide, while the inward diffusion of O anions is responsible for the formation of chromium and inner oxides. In the low-alloy steel with higher chromium content, the thickness of the mixed oxide layer containing Cr increased, and the oxidation rate decreased at all oxidation temperatures.

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High-Temperature Oxidation Behavior of Fe–1Cr–0.2Si Steel

Cited by 27 publications

References 35 publications

High-Temperature Oxidation Behaviour of AISI H11 Tool Steel

High-Temperature Oxidation Behaviour of AISI H11 Tool Steel

Effect of Oxide Scale Microstructure on Atmospheric Corrosion Behavior of Hot Rolled Steel Strip

Effect of Cr Content on the High Temperature Oxidation of Low Alloy Steels

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