Effect of Fe on the Precipitate Characteristics and Out-of-Pile Corrosion Behavior of Zr-1Nb-xFe Alloys

Rong Shan Wang; Li Kui Weng; Yan Wei Zhang; Jian Qiao Geng; Chen Xi Du; Er Wei Liu

doi:10.4028/www.scientific.net/MSF.743-744.1

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HomeMaterials Science ForumMaterials Science Forum Vols. 743-744Effect of Fe on the Precipitate Characteristics...

Effect of Fe on the Precipitate Characteristics and Out-of-Pile Corrosion Behavior of Zr-1Nb-xFe Alloys

Abstract:

The effects of Fe addition on the precipitate characteristics and out-of-pile corrosion behavior of Zr-1Nb-xFe alloys, with x=0, 0.2 and 0.4 respectively, were investigated. The experimental results showed that the alloy with the composition of Zr-1Nb-0.4Fe had the best corrosion resistance and the alloy with the composition of Zr-1Nb-0.2Fe had the worst corrosion resistance. The relationship between the corrosion behavior and the microstructures including precipitate characteristics was discussed, and the elements contents, area fraction, as well as the mean diameter of the precipitate were analyzed. The β-Nb precipitate was found in Zr-1Nb alloy, both Zr (Nb,Fe)₂precipitate and β-Nb precipitate were formed in Zr-1Nb-0.2Fe alloy, while only Zr (Nb,Fe)₂ precipitate was observed in Zr-1Nb-0.4Fe alloy. It has been found that the size of precipitates increased with the increasing of Fe content. This work indicated that the Fe content dominates the crystal structure, volume fraction and the element contents of the precipitate, which affect the corrosion resistance of Zr alloy.

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Materials Science Forum (Volumes 743-744)

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1-7

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https://doi.org/10.4028/www.scientific.net/MSF.743-744.1

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January 2013

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Rong Shan Wang, Li Kui Weng, Yan Wei Zhang, Jian Qiao Geng, Chen Xi Du, Er Wei Liu

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Corrosion Behavior, Precipitate Characteristics, Zr Alloy

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