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湿H2S环境下典型压力容器用钢应力腐蚀裂纹扩展速率的估算与试验验证
Estimation and Experimental Verification of SCC Propagation Rate of Typical Steels for Pressure Vessels in Wet H2S Service Environment
【摘要】 本文在分析湿H2 S环境中氢致裂纹扩展动力学控制过程机理基础上 ,采用Gerberich的模型推导了 16MnR、15MnNbR、0 7MnCrMoVR三种材料以扩散为主导过程的裂纹平台扩展速率da/dt估算表达式 ,用WOL试样的试验结果对估算值进行了验证 ,并对常温下不同浓度的湿H2 S的应力腐蚀裂纹扩展的动力学控制过程进行了讨论
【Abstract】 In this paper the estimation expressions for diffusion-dominated crack propagation rates at plateau of the three materials 16MnR, 15MnNbR and 07MnCrMoVR are derived using Gerberich model based on dynamic control process mechanism of hydrogen-induced crack propagation rate in wet H 2S environment and the estimated values are verified using the test results of WOL specimen, and the dynamic control process of SCC propagation in the environment of wet H 2S of different concentrations under normal temperature is discussed.
【关键词】 湿H2S;
压力容器用钢;
裂纹扩展速率;
控制过程;
【Key words】 wet H 2S; pressure vessel steel; crack propagation rate; control process;
【Key words】 wet H 2S; pressure vessel steel; crack propagation rate; control process;
【基金】 科技部社会公益基金 ( 0 43GS);国际科技合作重点项目 ( 2 0 0 3DF0 0 0 44 )资助
- 【文献出处】 压力容器 ,Pressure Vessel Technology , 编辑部邮箱 ,2004年04期
- 【分类号】TH49
- 【被引频次】17
- 【下载频次】326