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Dynamic Behaviors of Hydrogen in Martensitic T91 Steel Evaluated by Using the Internal Friction Method

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【作者】 胡菁； 王先平； 庄重； 张涛； 方前锋； 刘长松；

【Author】 HU Jing;WANG Xian-Ping;ZHUANG Zhong;ZHANG Tao;FANG Qian-Feng;LIU Chang-Song;Key Laboratory of Materials Physics,Institute of Solid State Physics,Chinese Academy of Sciences;

【机构】 Key Laboratory of Materials Physics,Institute of Solid State Physics,Chinese Academy of Sciences；

【摘要】 Hydrogen atoms are electrochemically introduced into commercial martensitic T91 steel,and the hydrogen dynamic behaviors are investigated by internal friction(IF) technology.A complex spectrum with multicomponent peaks is detected in the hydrogen-charged T91 steel in the temperature range of 135-290 K.Analysis of peak configuration reveals that the multicomponent peaks consist of one relaxational peak and two non-relaxational peaks.The mechanism of the wide relaxational component is ascribed to the combination of a hydrogen Snoek-like diffusion process and the interaction of hydrogen with movable dislocations,while the two non-relaxational peaks are preliminarily suggested to be caused by some kinds of transient processes related with hydrogen redistribution and outgassing.The binding energy of hydrogen to dislocation is determined to be about 0.19 eV.

【Abstract】 Hydrogen atoms are electrochemically introduced into commercial martensitic T91 steel,and the hydrogen dynamic behaviors are investigated by internal friction(IF) technology.A complex spectrum with multicomponent peaks is detected in the hydrogen-charged T91 steel in the temperature range of 135-290 K.Analysis of peak configuration reveals that the multicomponent peaks consist of one relaxational peak and two non-relaxational peaks.The mechanism of the wide relaxational component is ascribed to the combination of a hydrogen Snoek-like diffusion process and the interaction of hydrogen with movable dislocations,while the two non-relaxational peaks are preliminarily suggested to be caused by some kinds of transient processes related with hydrogen redistribution and outgassing.The binding energy of hydrogen to dislocation is determined to be about 0.19 eV.

【基金】 Supported by the National Natural Science Foundation of China under Grant Nos 11175203,91026002 and 91126002;the Strategic Priority Research Program of Chinese Academy of Sciences under Grant Nos KJCX2-YW-N35 and XDA03010303;the National Magnetic Confinement Fusion Program of China under Grant No 2011GB108004
  • 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2013年04期
  • 【分类号】O482
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