Effects of Sn and Nb on massive hydriding kinetics of Zr–XSn–YNb alloy

Kim, Y.-s; Kim, S.-k; Bang, Je-Geon; Jung, Young-Dae

doi:10.1016/s0022-3115(99)00281-0

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…Due to a contribution of the surrounding Zr-matrix, the EDS analysis showed that the Zr content in the same kind precipitates is notably different, but there is only little deviation about Fe/Nb ratio of the same kind precipitates. The EDS analysis revealed that all the precipitates in these specimens contained niobium, which was consistent with that of zirconium alloys containing niobium to 0.4% studied by Isobe et al [10] and Kim et al [13]. This result indicated that the solubility limit of Nb in the matrix might be lower than 0.4%, although the maximum solubility limit of Nb in the matrix of Zr-Nb alloy is 0.6%.…”

Section: Microstructure Of Heat-treated Specimenssupporting

confidence: 89%

Effect of heat treatment on the microstructure and corrosion resistance of a Zr–Sn–Nb–Fe–Cr alloy

Liu

Zhou

et al. 2005

Journal of Nuclear Materials

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Section: Microstructure Of Heat-treated Specimenssupporting

confidence: 89%

Effect of heat treatment on the microstructure and corrosion resistance of a Zr–Sn–Nb–Fe–Cr alloy

Liu

Zhou

et al. 2005

Journal of Nuclear Materials

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“…Fig. 7 shows the relationship between Fe/Nb ratio and particle size from data of this work and reported data from the literatures [24][25][26] . Although different manufacturing processes were adopted, all data showed the same trend in that the Fe/Nb ratio decreases with increasing particle size in all samples.…”

Section: The Ternary Zr-fe-nb Precipitatementioning

confidence: 94%

Formation and fine-structures of nano-precipitates in ZIRLO

Yuan

Cao

Yue³

et al. 2016

Journal of Alloys and Compounds

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Transmission electron microscopy and energy dispersive X-ray spectroscopy have been used for crystallographic and compositional characterization of nano-precipitates distributed within the α-Zr matrix of the ZIRLO alloy. Intermetallic nano-particles with the C14 Laves-phase structure were found to be the dominant precipitate phase typically larger than 60 nm in sizes, which is assigned to the Zr(Fe,Nb)2 formula with Fe and Nb being mixed on the second sublattice sites in the bracket. Stacking faults were also observed in the ternary Laves phase, together with dislocations presenting on prism planes of the matrix solid solution. Besides, some fine spherical β-Nb particles about 30 nm in size were also found to precipitate within the α-Zr grains, with the α/β interface being crystallographically coherent.

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“…It is emphasized that the mechanical strength and the corrosion resistance of Zr alloys are closely related to the types and amounts of alloying elements [12][13][14][15][16][17]. It is difficult to achieve high…”

Section: Introductionmentioning

confidence: 99%

New Low-Sn Zr Cladding Alloys with Excellent Autoclave Corrosion Resistance and High Strength

Zhang

Jiang

Pang

et al. 2017

Metals

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Abstract:It is expected that low-Sn Zr alloys are a good candidate to improve the corrosion resistance of Zr cladding alloys in nuclear reactors, presenting excellent corrosion resistance and high strength. The present work developed a new alloy series of Zr-0.25Sn-0.36Fe-0.11Cr-xNb (x = 0.4~1.2 wt %) to investigate the effect of Nb on autoclave corrosion resistance. Alloy ingots were prepared by non-consumable arc-melting, solid-solutioned, and then rolled into thin plates with a thickness of 0.7 mm. It was found that the designed low-Sn Zr alloys exhibit excellent corrosion resistances in three out of pile autoclave environments (distilled water at 633 K/18.6 MPa, 70 ppm LiOH solution at 633 K/18.6 MPa, and superheated water steam at 673 K/10.3 MPa), as demonstrated by the fact of the Zr-0.25Sn-0.36Fe-0.11Cr-0.6Nb alloy shows a corrosion weight gain ∆G = 46.3 mg/dm 2 and a tensile strength of σ UTS = 461 MPa following 100 days of exposure in water steam. The strength of the low-Sn Zr alloy with a higher Nb content (x = 1.2 wt %) is enhanced up to 499 MPa, comparable to that of the reference high-Sn N36 alloy (Zr-1.0Sn-1.0Nb-0.25Fe, wt %). Although the strength improvement is at a slight expense of corrosion resistance with the increase of Nb, the corrosion resistance of the high-Nb alloy with x = 1.2 (∆G = 90.4 mg/dm 2 for 100-day exposure in the water steam) is still better than that of N36 (∆G = 103.4 mg/dm 2 ).

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Effects of Sn and Nb on massive hydriding kinetics of Zr–XSn–YNb alloy

Cited by 6 publications

References 6 publications

Effect of heat treatment on the microstructure and corrosion resistance of a Zr–Sn–Nb–Fe–Cr alloy

Effect of heat treatment on the microstructure and corrosion resistance of a Zr–Sn–Nb–Fe–Cr alloy

Formation and fine-structures of nano-precipitates in ZIRLO

New Low-Sn Zr Cladding Alloys with Excellent Autoclave Corrosion Resistance and High Strength

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