| 压力容器用钢氢致开裂的声发射试验研究 |
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| 引用本文： | 李丽菲,张万岭,沈功田,李小亭.压力容器用钢氢致开裂的声发射试验研究[J].压力容器,2009,26(6):5-8. |
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| 作者姓名： | 李丽菲 张万岭 沈功田 李小亭 |
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| 作者单位： | 1. 河北大学,质量技术监督学院,河北保定071002
2. 中国特种设备检测研究院,北京,100013 |
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| 基金项目： | 国家十一五科技支撑计划 |
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| 摘 要： | 氢致开裂是在役压力容器一种常见的失效形式。声发射技术是监测动态破坏过程的有效手段。为了研究压力容器用钢氢致开裂过程的声发射特征,对电解充氢过程中的20R钢进行了监测。试验结果表明,碳钢表面电解充氢并腐蚀的过程和内部氢致裂纹的产生均会对材料的声发射活动产生影响。氢致裂纹的发展过程可分为孕育期和扩展期两个阶段,随着裂纹的生长,高幅声发射信号的数量明显增多。试验结果为压力容器现场检验提供了参考。
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| 关 键 词： | 氢致开裂 声发射 碳钢 压力容器 |
Detection of Hydrogen Induced Cracking for Steel Used in Pressure Vessel by Acoustic Emission Technique |
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| LI Li-fei,ZHANG Wan-ling,SHEN Gong-tian,LI Xiao-ting.Detection of Hydrogen Induced Cracking for Steel Used in Pressure Vessel by Acoustic Emission Technique[J].Pressure Vessel Technology,2009,26(6):5-8. |
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| Authors: | LI Li-fei ZHANG Wan-ling SHEN Gong-tian LI Xiao-ting |
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| Affiliation: | LI Li - fei , ZHANG Wan - ling , SHEN Gong - tian, LI Xiao - ting (1. College of Quality Engineering Supervision, Hebei University, Baoding 071002, China; 2. China Special Equipment Inspection Institute, Beijing 100013, China) |
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| Abstract: | Hydrogen Induced Cracking （HIC） is one of failure types of in - service carbon steel pressure vessels. Acoustic emission is a good method to monitor the dynamic break progress. In order to investigate the characteristic of acoustic emission signals produced by HIC of carbon steel used in pressure vessel, the hydrogen charging progress of 20R steel was monitored using acoustic emission instrument. The results proved that observable acoustic activity is an effect of hydrogen charging, corrosion and HIC production in the steel samples. The process of HIC can be divided into two stages, gestation and extending. The amount of high amplitude AE signals were increased obviously with cracking growth. This study provides a reference to pressure vessel inspection on site. |
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| Keywords: | hydrogen induced cracking acoustic emission carbon steel pressure vessel |
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