典型文献
Effect of cathodic potential on stress corrosion cracking behavior of 21Cr2NiMo steel in simulated seawater
文献摘要：
This study aims at providing systematically insights to clarify the impact of cathodic polarization on the stress corrosion cracking (SCC) behavior of 21Cr2NiMo steel. Slow-strain-rate tensile tests demonstrated that 21Cr2NiMo steel is highly sensitive to hydrogen embrit-tlement at strong cathodic polarization. The lowest SCC susceptibility occurred at ?775 mV vs. SCE, whereas the SCC susceptibility was re-markably higher at potentials below ?950 mV vs. SCE. Scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD) revealed that the cathodic potential decline caused a transition from transgranular to intergranular mode in the fracture path. The intergranular mode transformed from bainite boundaries separation to prior austenitic grain boundaries separation under stronger cathodic polarization. Fur-thermore, corrosion pits promoted the nucleation of SCC cracks. In conclusion, with the decrease in the applied potential, the SCC mechanism transformed from the combination of hydrogen embrittlement and anodic dissolution to typical hydrogen embrittlement.
文献关键词：
中图分类号：
作者姓名：
Menghao Liu;Zhiyong Liu;Cuiwei Du;Xiaoqin Zhan;Chunduo Dai;Yue Pan;Xiaogang Li
作者机构：
Corrosion and Protection Center,University of Science and Technology Beijing,Beijing 10083,China;Zhengmao Group Co.,Ltd.,Zhenjiang 212000,China
文献出处：
引用格式：
[1]Menghao Liu;Zhiyong Liu;Cuiwei Du;Xiaoqin Zhan;Chunduo Dai;Yue Pan;Xiaogang Li-.Effect of cathodic potential on stress corrosion cracking behavior of 21Cr2NiMo steel in simulated seawater)[J].矿物冶金与材料学报,2022(02):263-270
A类：
21Cr2NiMo,embrit,tlement
B类：
Effect,cathodic,stress,corrosion,cracking,behavior,steel,simulated,seawater,This,study,aims,providing,systematically,insights,clarify,impact,polarization,SCC,Slow,strain,tensile,tests,demonstrated,that,highly,sensitive,hydrogen,lowest,susceptibility,occurred,mV,SCE,whereas,was,markably,higher,potentials,below,Scanning,electron,microscopy,backscattered,diffraction,EBSD,revealed,decline,caused,transition,from,transgranular,intergranular,mode,fracture,path,transformed,bainite,boundaries,separation,prior,austenitic,grain,under,stronger,Fur,thermore,pits,promoted,nucleation,cracks,In,conclusion,decrease,applied,mechanism,combination,embrittlement,anodic,dissolution,typical
AB值：
0.552921
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