Abstract
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.
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