In-situ scanning Kelvin probe force microscopy on the diverse hydrogen trapping behaviours around incoherent NbC nanoprecipitates  

作　　者：Binglu Zhang Zhaoxiang Ma Yuan Ma Yongqing Chen Baolong Jiang Yu Jia Rongjian Shi Lin Chen Yang He Lijie Qiao 

机构地区：[1]Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]Corrosion and Protection Center,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China [3]College of Nuclear Equipment and Nuclear Engineering,Yantai University,Yantai 264005,China [4]Department of Materials Science and Engineering,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China [5]State Key Laboratory of Marine Resource Utilization in South China Sea,School of Materials Science and Engineering,Hainan University,Haikou 570228,China [6]College of Safety and Ocean Engineering,China University of Petroleum(Beijing),Beijing 102249,China

出　　处：《Journal of Materials Science & Technology》2024年第27期216-224,共9页材料科学技术(英文版)

基　　金：supported by the National Natural Science Foun-dation of China under grant Nos.52231003,52301073,52271049,and 52201063.

摘　　要：One of the most intriguing methods of mitigating the hydrogen embrittlement of steels entails nano-precipitates 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 scan-ning 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.

关 键 词：Hydrogen embrittlement Scanning Kelvin probe force microscopy(SKPFM) Carbide precipitates TEM High-strength low-alloy(HSLA)steels 

分 类 号：TG1[金属学及工艺—金属学]