2.25Cr-1Mo钢氢致裂纹扩展行为研究
An Investigation of the Growth Behavior of Hydrogen-induced Crack in 2.25Cr-1Mo Steel
摘 要
采用电解充氢方法对2.25Cr-1Mo钢氢致裂纹扩展进行试验,并采用甘油测氢法测定了2.25Cr-1Mo钢发生裂纹扩展时钢中扩散的平均氢浓度.为了进一步了解裂纹尖端的氢浓度大小对裂纹扩展的影响,利用有限元软件对氢在2.25Cr-1Mo钢中的扩散过程进行模拟分析,系统研究了在应力-氢环境交互作用下裂纹尖端周围的氢扩散规律,并给出了裂纹扩展时裂尖局部位置的氢浓度大小.
2.25Cr-1Mo钢
裂纹扩展
有限元分析
氢扩散
裂纹尖端
electrochemical hydrogen charging
2.25Cr-1Mo steel
crack growth
finite element analysis
hydrogen diffusion
crack tip
Abstract
A technique of electrochemical hydrogen charging was used to study the behavior of hydrogen-induced cracking.The average hydrogen concentration diffused in 2.25Cr-1Mo steel during hydrogen-induced cracking(HIC) was measured.In order to investigate the relationship between hydrogen concentration near the crack tip and HIC,a finite element analysis was adopted to simulate the hydrogen diffusion regularity near the crack tip in the interaction between stress and hydrogen environment.And the magnitude of hydrogen concentration at the crack tip during the crack growth was presented.
中图分类号 TG172
所属栏目 试验研究
基金项目
收稿日期 2007/4/6
修改稿日期 2007/5/17
网络出版日期
作者单位点击查看
引用该论文: WEN Ji-li,HUA-li,XU-Hong,WANG Zhi-wen,WANG Zheng-dong. An Investigation of the Growth Behavior of Hydrogen-induced Crack in 2.25Cr-1Mo Steel[J]. Corrosion & Protection, 2008, 29(3): 121～124
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参考文献
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【2】A Nagao,S Kuramoto,K Ichitani,et al.Visulization of hydrogen transport in high strength steels affected by stress fields and hydrogen trapping[J].Scripta Mater,2001(45):1227-1232.
【3】R D Smith Ⅱ,G P Landis,I Maroef,et al.The determination of hydrogen distribution in high-strength steel weldments Part1:laser ablation methods[J].Weld J,2001(5):41-46.
【4】Zhengdong Wang,Li Hua,Dongdi Wu.Simulation of hydrogen-induced cracking in reactor steels[C]//Structural Integrity and Materials Aging,Fracture Mechanics 2003.Shanghai:East China University of Science and Technology Press,2003.
【5】董金梅,林建鸿,王正东.加氢反应器氢致开裂的有限元分析[J].压力容器,2001,18(3):47-49.
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【7】徐颖,王正东,吴东棣.电解充氢试验条件对堆焊层剥离的影响[J].压力容器,1993,10(6):457-461.
【8】褚武扬.氢损伤和滞后断裂[M].北京:冶金工业出版社,1988:57-58.
【9】庄茁,张帆,岑松,等.ABAQUS非线性有限元分析与实例[M].北京:科学出版社,2005.
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