Insight into the interface structure and its effect on the oxidation in pearlite U-2Nb alloy

Atomic interface structure of in pearlite U-2wt.%Nb (U-2Nb) alloy and its effect on the oxidation are investigated by HRSTEM combined with FIB. The crystallographic orientation relationship between α and γ phase is determined: and . The interfaces of are relatively coherent. Under air oxidation, α p...

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Bibliographic Details
Published in:Materials letters 2023-04, Vol.337, p.133792, Article 133792
Main Authors: Zhao, Y.W., Li, F.F., Chen, X.L., Lu, C., Zhang, L., Zhang, Y.Z., Shi, J., Liu, F., Su, B., Liu, K.Z.
Format: Article
Language:English
Subjects:
Interface
Microstructure
Oxidation
U-2Nb alloy
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Summary:Atomic interface structure of in pearlite U-2wt.%Nb (U-2Nb) alloy and its effect on the oxidation are investigated by HRSTEM combined with FIB. The crystallographic orientation relationship between α and γ phase is determined: and . The interfaces of are relatively coherent. Under air oxidation, α phase takes precedence to attract oxygen compared with interface. The key role affecting oxidation of the alloy could attribute to the characteristic of α phase with high activity instead of the interfaces. This work may provide fundamental insight into the interface-related corrosion behavior in pearlite alloys.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2022.133792