Corrosion studies of a low alloyed Fe–10Cr–4Al steel exposed in liquid Pb at very high temperatures

Dömstedt, Peter; Lundberg, Mats; Szakálos, Peter

doi:10.1016/j.jnucmat.2020.152022

Cited by 30 publications

(11 citation statements)

References 43 publications

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“…Ferritic FeCrAl alloys are normally used as heating elements, as they areable to work at 900–1400 °C [ 28 ]. The high Cr content in these alloys was reported to cause embrittlement at around 475 °C, due to phase transformations [ 29 , 30 , 31 ]. Therefore, the embrittlement characteristic of FeCrAl alloy could be minimized by reducing the Cr content.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the embrittlement characteristic of FeCrAl alloy could be minimized by reducing the Cr content. However, the introduction of Cr was reported to be able to enhance the formation of a protective Al-rich oxide layer [ 30 ]. Among FeCrAl alloys with different elementary compositions or manufacturing processes, the Fe-10Cr-4Al-RE developed by Ejenstam et al [ 30 , 31 ] was reported to be able to withstand heavy liquid metal corrosion at temperatures higher than 900 °C.…”

Section: Introductionmentioning

confidence: 99%

“…However, the introduction of Cr was reported to be able to enhance the formation of a protective Al-rich oxide layer [ 30 ]. Among FeCrAl alloys with different elementary compositions or manufacturing processes, the Fe-10Cr-4Al-RE developed by Ejenstam et al [ 30 , 31 ] was reported to be able to withstand heavy liquid metal corrosion at temperatures higher than 900 °C. However, the weldability and machinability of Fe-10Cr-4Al-RE on parts made of austenitic stainless steel still needs to be verified, due to the high content of Cr and Al in it.…”

Section: Introductionmentioning

confidence: 99%

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Influence of TIG and Laser Welding Processes of Fe-10Cr-4Al-RE Alloy Cracks Overlayed on 316L Steel Plate

Liu

et al. 2022

Materials

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In this paper, the possibility of applying different welding strategies to overlay an FeCrAl layer against corrosion from heavy liquid metal on a plain plate made of 316L austenitic stainless steel was investigated. This technology could be used in manufacturing the main vessel of CiADS, which may be considered as a more economic and feasible solution than production with the corrosion-resistant FeCrAl alloy directly. The main operational parameters of the laser welding process, including laser power, weld wire feeding speed, diameter of the welding wire, etc., were adjusted correspondingly to the optimized mechanical properties of the welded plate. After performing the standard nuclear-grade bending tests, it can be preliminarily confirmed that the low-power pulse laser with specific operational parameters and an enhanced cooling strategy will be suitable to surface an Fe-10Cr-4Al-RE layer with a thickness of approximately 1 mm on a 40 mm-thick 316L stainless steel plate, thanks to the upgraded mechanical properties incurred by refined grains with a maximum size of around 300 μm in the welded layer.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of TIG and Laser Welding Processes of Fe-10Cr-4Al-RE Alloy Cracks Overlayed on 316L Steel Plate

Liu

et al. 2022

Materials

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“…The addition of RE is known to significantly improve the oxidation properties, mainly by balancing the outward Al diffusion and the inward O diffusion through the oxide (Hultquist et al, 2001), as well as gettering of impurities (Hou & Stringer, 1992;Smialek et al, 1994). This type of Fe-10Cr-4Al+RE (10-4) alloy has, in previous studies, shown promising oxidation properties and ductile behavior in liquid lead up to 800°C (Dömstedt et al, 2019(Dömstedt et al, , 2020.…”

Section: Introductionmentioning

confidence: 99%

The Nanostructure of the Oxide Formed on Fe–10Cr–4Al Exposed in Liquid Pb

Lindgren

Dömstedt

Szakálos

et al. 2022

Microscopy and Microanalysis

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“…Usually, the Cr content ranges from 9 to 16 wt.%, and the Al content is around 4 wt.% [ 6 , 7 , 8 , 9 ]. In order to increase the high-temperature strength, an oxide dispersion strengthening (ODS) phase (Y 2 O 3 ) is added to Fe-Cr-Al alloys [ 10 , 11 ]. However, only adding Y 2 O 3 alone will lead to a limited increase in the strength as a result of the formation of coarse Y-Al-O particles.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Oxidation Properties and Microstructural Evolution of Nanostructure Fe-Cr-Al ODS Alloys

Chen

Zhang

et al. 2021

Materials

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The oxidation behavior and microstructural evolution of the nanostructure of Fe-Cr-Al oxide dispersion strengthened (ODS) alloys prepared by spark plasma sintering were investigated by high-temperature oxidation experiments in air at 1200 °C for 100 h. The formation of Al2O3 scale was observed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS) line scans. The oxidation rate of Fe-Cr-Al ODS alloys is lower than that of conventional Fe-Cr-Al alloys, and the oxide layer formed on the Fe-Cr-Al alloy appeared loose and cracked, whereas the oxide layer formed on the Fe-Cr-Al ODS alloys was adherent and flat. This is due to the high density of dispersed nano-oxides hindering the diffusion of Al element and the formation of vacancies caused by them. In addition, the nano-oxides could also adhere to the oxide layer. Besides, the microstructure of the Fe-Cr-Al ODS alloy had excellent stability during high-temperature oxidation.

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Corrosion studies of a low alloyed Fe–10Cr–4Al steel exposed in liquid Pb at very high temperatures

Cited by 30 publications

References 43 publications

Influence of TIG and Laser Welding Processes of Fe-10Cr-4Al-RE Alloy Cracks Overlayed on 316L Steel Plate

Influence of TIG and Laser Welding Processes of Fe-10Cr-4Al-RE Alloy Cracks Overlayed on 316L Steel Plate

The Nanostructure of the Oxide Formed on Fe–10Cr–4Al Exposed in Liquid Pb

High-Temperature Oxidation Properties and Microstructural Evolution of Nanostructure Fe-Cr-Al ODS Alloys

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