Corrosion resistance of Al-alloying high Cr–ODS steels in stagnant lead–bismuth

Takaya, Shigeru; Furukawa, Tomohiro; Inoue, Masakí; Fujisawa, Toshiharu; Okuda, Takanari; Abe, Fujio; Ohnuki, Somei; Kimura, Akihiko

doi:10.1016/j.jnucmat.2009.10.023

Cited by 64 publications

(18 citation statements)

References 16 publications

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“…Among these ODS steels, in particular high Cr-and Al-alloyed ODS ferritic steels are promising candidate cladding materials for nuclear fission reactors due to their better corrosion resistance against lead-bismuth eutectic coolants [11][12][13]. Compared to Ti-alloyed ODS steels, the oxide nanoparticles in Al-alloyed ODS steels are much less understood.…”

Section: Introductionmentioning

confidence: 99%

Oxide nanoparticles in an Al-alloyed oxide dispersion strengthened steel: crystallographic structure and interface with ferrite matrix

Zhang

Pantleon²

2017

Philosophical Magazine

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. Oxide nanoparticles in an Al-alloyed oxide dispersion strengthened steel: crystallographic structure and interface with ferrite matrix. Philosophical Magazine, 97(21), 1824-1846 . DOI: 10.1080/14786435.2017 Oxide nanoparticles in an Al-alloyed oxide dispersion strengthened steel: crystallographic structure and interface with ferrite matrix Oxide nanoparticles are quintessential for ensuring the extraordinary properties of oxide dispersion strengthened (ODS) steels. In this study, the crystallographic structure of oxide nanoparticles, and their interface with the ferritic steel matrix in an Al-alloyed ODS steel, i.e. PM2000, were systematically investigated by high resolution transmission electron microscopy. The majority of oxide nanoparticles were identified to be orthorhombic YAlO3. During hot consolidation and extrusion, they develop a coherent interface and a near cuboidon-cube orientation relationship with the ferrite matrix in the material. After annealing at 1200 C for 1 hour, however, the orientation relationship between the oxide nanoparticles and the matrix becomes arbitrary, and their interface mostly incoherent. Annealing at 1300 C leads to considerable coarsening of oxide nanoparticles, and a new orientation relationship of pseudo-cube-on-cube between oxide nanoparticles and ferrite matrix develops. The reason for the developing interfaces and orientation relationships between oxide nanoparticles and ferrite matrix under different conditions is discussed.

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Section: Introductionmentioning

confidence: 99%

Oxide nanoparticles in an Al-alloyed oxide dispersion strengthened steel: crystallographic structure and interface with ferrite matrix

Zhang

Pantleon²

2017

Philosophical Magazine

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“…[6][7][8] In Si-containing steels and Alcontaining steels, it is anticipated that these elements also affect mechanical and irradiation properties of the steels. The Si-containing steel, EP823 showed severe embrittlement at irradiation temperatures below 733 K. 9) Furthermore, it is expected that Al concentration in steels exercises a great influence on mechanical properties 7,8) and irradiation properties because Al strongly stabilizes a ferrite phase in steels. In contrast, coating and surface treatment are promising as the method by which only high corrosion resistance is added to steels with good mechanical and irradiation properties.…”

Section: Introductionmentioning

confidence: 99%

Applicability of Al-Powder-Alloy Coating to Corrosion Barriers of 316SS in Liquid Lead-Bismuth Eutectic

et al. 2011

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A new Al-alloy coating method using Al, Ti and Fe powders has been applied to 316SS in order to develop corrosion resistant coating in liquid lead-bismuth eutectic (LBE). The 316SS plates with coating layers of different Al concentrations were exposed to liquid LBE with controlled oxygen concentrations of 10 À6 to 10 À4 mass% at 823 K for 3600 ks. While surface oxidation and grain boundary corrosion accompanied by liquid LBE penetration are observed in 316SS without Al-alloy coating, the Al-alloy coating is effective to protect such severe corrosion attacks in liquid LBE. Although the coating layer containing 2.8 mass% Al does not always keep sufficient corrosion resistance, good corrosion resistance is obtained through the Al-oxide film formed in liquid LBE in the coating layer where the average Al concentration is 4.2 mass%. Cracks are formed in the coating layer containing 17.8 mass% Al during the coating process. The Al-powder-alloy coating applied to 316SS is promising as a corrosion resistant coating method in liquid LBE environment.

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“…The addition of Al into the ODS steels resulted in high resistance to LBE corrosion even after an exposure for 5000 h due to the formation of a dense alumina layer on the surface of ODS steels [20]. Kimura and coworkers [22] showed that the addition of 4 wt.% Al remarkably enhanced the corrosion resistance of 16Cr-ODS steel in SCW by forming stable alumina layer on the surface.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

“…On the other hand, Al has been recognized as an important alloying element to improve the corrosion resistance of the high-Cr ODS steels for the generation Ⅳ fission power plants [19][20][21][22][23]. The addition of Al into the ODS steels resulted in high resistance to LBE corrosion even after an exposure for 5000 h due to the formation of a dense alumina layer on the surface of ODS steels [20].…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Feasibility of using Y2Ti2O7 nanoparticles to fabricate high strength oxide dispersion strengthened Fe–Cr–Al steels

Liu

Wang

et al. 2015

Materials & Design

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Corrosion resistance of Al-alloying high Cr–ODS steels in stagnant lead–bismuth

Cited by 64 publications

References 16 publications

Oxide nanoparticles in an Al-alloyed oxide dispersion strengthened steel: crystallographic structure and interface with ferrite matrix

Oxide nanoparticles in an Al-alloyed oxide dispersion strengthened steel: crystallographic structure and interface with ferrite matrix

Applicability of Al-Powder-Alloy Coating to Corrosion Barriers of 316SS in Liquid Lead-Bismuth Eutectic

Feasibility of using Y2Ti2O7 nanoparticles to fabricate high strength oxide dispersion strengthened Fe–Cr–Al steels

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