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氢对2(1/4)Cr-1Mo钢力学性能的影响

钟曼英

中国腐蚀与防护学报

在模拟加氢反应器工况条件下,研究氢对加氢反应器器壁材料2(1/4)Cr-1Mo钢的力学性能的影响。采用低周疲劳实验计算原始状态和渗氢试样的裂纹扩展速率da/dN及门槛值Δth;并测试裂纹尖端附近的氢分布。结果表明,氢含量与应力场有关,应力越大氢含量就越高。假设在反应器壁内存在表面裂纹的情况下,估算了加氢反应器的剩余寿命。

关键词: 2(1/4)Cr-1Mo钢 , mechanical properties , crack propagation rate da/dN , hydrogen distribution , residual life

HYDROGEN DISTRIBUTION AND DIFFUSION BEHAVIOUR IN HIGH PRESSURE HYDROGEN CHARGED AUSTENITIC STEEL BY IMMA

MA Luming LI Yiyi LIU Shuwang CHEN Lian Institute of Metal Research , Academia Sinica , Shenyang , China MA Luming Institute of Metal Research , Academia Sinica , Shenyang , China

金属学报(英文版)

The hydrogen distribution curve along cross-section of high pressure hydrogen charged spec- imens of 21Cr-7Ni-9Mn-N austenitic steel was obtained quantitatively by IMMA(Ion Microprobe Mass Analyzer).Thus the hydrogen solubility and diffusivity may be measured, and the hydrogen permeability and other parameters may be calculated indirectly.The hydrogen distribution in specimens either long-term aged in air or in electron beam weld seam after high pressure hydrogen charging was also examined.

关键词: ion microprobe analysis , null , null , null , null

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