| 15MnVR与16MnR钢在氢氧化钠溶液中的抗应力腐蚀试验研究 |
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| 引用本文： | 张明锋,陈学东.15MnVR与16MnR钢在氢氧化钠溶液中的抗应力腐蚀试验研究[J].压力容器,2008,25(8):1-5. |
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| 作者姓名： | 张明锋 陈学东 |
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| 作者单位： | 1. 浙江工业大学,化工机械设计研究所,浙江,杭州,310032
2. 浙江工业大学,化工机械设计研究所,浙江,杭州,310032;合肥通用机械研究院,国家压力容器与管道安全工程技术研究中心,安徽,合肥,230031 |
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| 摘 要： | 采用楔形张开加载（WOL）恒位移预裂纹试样研究了16MnR钢和15MnVR钢在氢氧化钠溶液中的抗应力腐蚀性能。测得了180℃下30％NaOH溶液中两种材料的应力腐蚀临界应力强度因子和裂纹扩展速率，即16MnR材料的应力府蚀裂纹扩展速率da／dt为0．039～0．040mm／h，KISCC不大于82．75～90．85MPa·m^0.5，15MnVR材料的应力腐蚀裂纹扩展速率da／dt为0．018mm／h，KM。不大于87．58～102．44MPa·m^0.5。同时采用扫描电镜和能谱技术对断口进行了相应的观察和理论分析，得出NaOH溶液中两种材料均为沿晶开裂。
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| 关 键 词： | 氢氧化钠 应力腐蚀 16MnR 15MnVR 临界应力强度因子 裂纹扩展速率 |
Experimental Investigation of Stress Corrosion Research for Pressure Vessel Commonly Used Steels in Sodium Hydroxide Solution |
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| ZHANG Ming-feng,CHEN Xue-dong.Experimental Investigation of Stress Corrosion Research for Pressure Vessel Commonly Used Steels in Sodium Hydroxide Solution[J].Pressure Vessel Technology,2008,25(8):1-5. |
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| Authors: | ZHANG Ming-feng CHEN Xue-dong |
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| Affiliation: | ZHANG Ming - feng , CHEN Xue - dong( 1. Institute of Process Equipment and Control Engineering, Zhejiang University of Technology, Hangzhou 310032 ,China; 2. National Technical Research Center on Safety Engineering of Pressure Vessels and Pipelines, Hefei General Machinery Research Institute, Hefei 230031,China) |
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| Abstract: | Stress corrosion cracking（SCC） of 16MnR steel and 15MnVR steel were studied by the method of stress corrosion test for procracked wedgeopen loading（WOL） specimens in sodium hydroxide solution. After the tests in 30% （WT） concentrations of sodium hydroxide solution with the 180 ℃ , the crack growth rate and threshold stress intensity factors of the two steels were obtained , that were, the 16MnR steel between 0.039 - 0. 040 mm/h and lower than 82.75 - 90.85 MPa · m^0.5 ; the 15MnVR steel 0. 018 mm/h and lower than 87.58 - 102.44 MPa · m^0.5. The SEM and EDX technology were also used for the analysis of specimens＇ section. The characteristic of intergranular stress corrosion cracking were showed on both steels in this system. |
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| Keywords: | 16MnR 15MnVR |
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