Improvement in High Temperature Oxidation Resistance of 9 %Cr Ferritic–Martensitic Steel by Enhanced Diffusion of Mn

Chen, Shenghu; Jin, Xiaojie; Rong, Lijian

doi:10.1007/s11085-015-9596-6

Cited by 29 publications

(11 citation statements)

References 32 publications

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“…It is reported that 12–14 wt % Mn will improve the wear resistance of carbon-containing austenitic steels . The formation of the Mn-rich layer is also favored to severe the plastic deformation process of steel products, the compactness of the oxide scale, and the antioxidation of steels …”

Section: Discussionmentioning

confidence: 99%

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Contribution of Sodium Metasilicate to the Diffusion of Mn in Steel under Tribological Contact at High Temperatures

et al. 2019

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The environmentally friendly sodium metasilicate is regarded as one of the promising lubricants for hot metal formation because of its excellent thermal stability and unique physical chemistry property. This work aims to reveal how alkaline silicate reacts with manganese (Mn) in mild steel during tribological contact at high temperatures. The results suggest that the melted sodium metasilicate contributes to the diffusion of Mn from mild steel because of the combined effects of the chemical potential gradient and the different oxidation states of Mn in the steel substrate and melts. The hierarchical structure of the tribo-interface indicates that a Mn-rich layer containing fingerlike and mushroomlike oxides, such as Mn 2 O 3 , NaMnO 2 , and MnFe 2 O 4 , exists between the iron oxide scale and the sodium-rich layer, which acts as a barrier to the inward diffusion of oxygen.

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Section: Discussionmentioning

confidence: 99%

“…53 The formation of the Mn-rich layer is also favored to severe the plastic deformation process of steel products, the compactness of the oxide scale, and the antioxidation of steels. 54…”

Section: Discussionmentioning

confidence: 99%

Contribution of Sodium Metasilicate to the Diffusion of Mn in Steel under Tribological Contact at High Temperatures

et al. 2019

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“…Dynamic behaviour of dislocations is driven by the free energy difference of thermodynamic stability between ferrite and tempered martensite. The dislocation activity plays an important role in grain refinement, which is the main reason for sub-boundary formation [15]. Dislocations are regarded as fast diffusion pipes, which facilitates the fast growth rate of MX carbonitride precipitates.…”

Section: Characterisation and Formation Of Delta Ferritementioning

confidence: 99%

Effect of thermal treatment on the evolution of delta ferrite in 11Cr–3Co–2.3W steel

Cui

Gao

et al. 2018

Materials Science and Technology

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Effect of thermal treatment on the evolution of delta ferrite was studied in 11Cr–3Co–2.3W steel. Ferrite-forming alloy elements promoted the formation of delta ferrite during thermo-mechanical processing. The results of JMatPro and chromium equivalent calculations indicated that 11Cr–3Co–2.3W steel partially contained delta ferrite. Cr and W were segregated in/around delta ferrite. Delta ferrite had a bamboo-type morphology and it contained MX-type carbonitrides inside and the Laves phase at the interface between delta ferrite and martensite. On annealing, delta ferrite dissolved especially during the early stage of annealing. After ageing at 600°C for 500 h, some Laves phases were observed in delta ferrite which is regarded as a favourable nucleation site. In the meantime, its precipitation resulted in the reduction of dissolved W and Mo in the matrix.

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“…Elements, like Cr, Si, Al, and Mn, are usually added to improve the oxidation resistance of steels by forming protective oxide layers, Cr 2 O 3 , SiO 2 , Al 2 O 3 , and Mn oxides, respectively. [16][17][18][19][20][21][22] The addition of rare earth elements also plays a significant role in improving the high-temperature oxidation resistance of steels. [23,24] As another common alloying element in steels, Zr, can not only improve the size and distribution of inclusions but also enhance the impact and creep resistance of steels.…”

mentioning

confidence: 99%

The Effect of Zr on the High‐Temperature Oxidation Resistance of 12Cr Ferritic/Martensitic Steels

Zeng

Zhou

Yang

et al. 2022

steel research int.

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The high‐temperature oxidation resistance of 12Cr ferritic/martensitic steels with Zr contents in the range of 0–1.3607 wt% is investigated at 650 and 800 °C in air. The results show that the oxidation resistance of steels is improved by adding Zr. The oxide layer on the surface of steels after oxidation is mainly composed of MnCr2O4 and Cr2O3, where traces of Mn2O3 and ZrO2 oxides can also be detected there. The oxide layer of steels consists of two layers, that is, the outer Mn‐rich oxides (MnCr2O4, Mn2O3) and the inner Cr‐rich oxides (Cr2O3). For none‐Zr steels oxidized at 650 °C, Cr2O3 oxides are also formed in the outer layer. The addition of Zr promotes the outer oxides to change from Cr2O3 oxides to MnCr2O4 oxides and reduces the growth rate of MnCr2O4 oxides. The effect of Zr on the high‐temperature oxidation resistance of steels can be attributed to its promoting effect on the formation of outer Mn‐rich oxides, which can refine the size of outer Mn‐rich oxides and form a dense outer oxide layer. The dense outer oxide layer can inhibit the inward diffusion of oxygen and improve the oxidation resistance of steel.

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Improvement in High Temperature Oxidation Resistance of 9 %Cr Ferritic–Martensitic Steel by Enhanced Diffusion of Mn

Cited by 29 publications

References 32 publications

Contribution of Sodium Metasilicate to the Diffusion of Mn in Steel under Tribological Contact at High Temperatures

Contribution of Sodium Metasilicate to the Diffusion of Mn in Steel under Tribological Contact at High Temperatures

Effect of thermal treatment on the evolution of delta ferrite in 11Cr–3Co–2.3W steel

The Effect of Zr on the High‐Temperature Oxidation Resistance of 12Cr Ferritic/Martensitic Steels

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