| 50Mn18Cr4WN奥氏体钢的应力腐蚀和氢致开裂 |
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| 引用本文： | 曾燕屏,唐祥云,刁凤琼.50Mn18Cr4WN奥氏体钢的应力腐蚀和氢致开裂[J].腐蚀科学与防护技术,1994,6(2):168-171. |
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| 作者姓名： | 曾燕屏 唐祥云 刁凤琼 |
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| 作者单位： | 清华大学材料系 |
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| 摘 要： | 本文采用悬臂弯曲预裂纹试样应力腐蚀试验方法和紧凑拉伸试样恒载荷法测定了50Mn18Cr40WN奥氏体钢在含C1-和NO3-的水溶液中应力腐蚀以及电解充氢条件下氢致开裂的门槛值,并对应力腐蚀和氢致开裂的裂纹走向与断口形貌进行了观察.50Mn18Cr4WN钢在含C1-和NO3-的水溶液中均能产生应力腐蚀开裂,且在含NO3-的水溶液中比在含C1-的水溶液中应力腐蚀敏感性大.在电解充氢条件下,50Mn18Cr4WN钢也能产生氢致开裂.
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| 关 键 词： | 应力腐蚀 氢致开裂 |
| 收稿时间： | 1994-03-25 |
| 修稿时间： | 1994-03-25 |
STRESS CORROSION CRACKING AND HYDROGEN INDUCED CRACKING BEHAVIOURS OF AUSTENITIC STEEL 50Mnl8Cr4WN |
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| ZENG Yanping,TANG Xiangyun,DIAO Fengqiong.STRESS CORROSION CRACKING AND HYDROGEN INDUCED CRACKING BEHAVIOURS OF AUSTENITIC STEEL 50Mnl8Cr4WN[J].Corrosion Science and Protection Technology,1994,6(2):168-171. |
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| Authors: | ZENG Yanping TANG Xiangyun DIAO Fengqiong |
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| Abstract: | The threshold values of SCC in chloride and nitrate aqueous solutions and HIC under dynamical hydrogen charging for steel 50Mnl8r4WN were determined using pre-cracked cantilever bend specimens and compact tension specimens.Observations of crack propagation and fracture morphologywere carried out by optical microscope and SEM respectively.The results indicate that the steel is much more sensitive to SCC in nitrate aqueous solution than in chloride. |
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| Keywords: | stress corrosion cracking hydrogen induced cracking |
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