1. In-situ scanning Kelvin probe force microscopy on the diverse hydrogen trapping behaviours around incoherent NbC nanoprecipitates.
- Author
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Zhang, Binglu, Ma, Zhaoxiang, Ma, Yuan, Chen, Yongqing, Jiang, Baolong, Jia, Yu, Shi, Rongjian, Chen, Lin, He, Yang, and Qiao, Lijie
- Subjects
KELVIN probe force microscopy ,HYDROGEN embrittlement of metals ,BORDERLANDS - Abstract
• Interaction of H with incoherent NbC precipitates was revealed by in-situ SKPFM. • Interactions of H with the border regions varies amongst different precipitates. • H-trapping behaviors of incoherent NbC precipitates could be intrinsically diverse. • Strains and defects on the border area may be critical to the H-trapping behavior. One of the most intriguing methods of mitigating the hydrogen embrittlement of steels entails nanoprecipitates that can trap H from enriching at vulnerable locations. However, controversial findings have been reported on whether the incoherent NbC precipitates trap hydrogen. Here, by using in-situ scanning Kelvin probe force microscopy (SKPFM), we reveal the dynamic interaction of H with the border area of incoherent NbC nanoprecipitates in steel. Results indicate that the interaction between H flux and the interfaces varies amongst different precipitates, implying that H-trapping behaviours of incoherent NbC precipitates could be intrinsically diverse. Potential origins underlying the distinct behaviours are analyzed. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2024
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