| 激光冲击对X70管线钢焊接接头H_2S应力腐蚀断口的影响 |
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| 引用本文： | 孔德军,吴永忠,龙丹.激光冲击对X70管线钢焊接接头H_2S应力腐蚀断口的影响[J].焊接学报,2011,32(10):13-16. |
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| 作者姓名： | 孔德军 吴永忠 龙丹 |
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| 作者单位： | 常州大学机械工程学院,常州,213016 |
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| 基金项目： | 江苏省自然科学基金资助项目(BK2009104); 江苏省普通高校研究生科研创新计划项目(XM2011-388) |
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| 摘 要： | 利用激光冲击波对X70管线钢焊接接头进行了改性处理,通过慢应变速率法（SSRT）研究了其在NACE（national association of corrosion engineers）标准饱和H2S溶液中应力腐蚀的敏感性,并对其断口进行SEM观察,分析了激光冲击处理对X70管线钢焊接接头抗H2S应力腐蚀开裂（SCC...
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| 关 键 词： | X70管线钢 焊接接头 激光冲击处理 应力腐蚀 |
| 收稿时间： | 2010/8/31 0:00:00 |
Effects of laser shock processing on H2S stress corrosion fractures of X70 pipeline steel welded joints |
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| KONG Dejun,WU Yongzhong and LONG Dan.Effects of laser shock processing on H2S stress corrosion fractures of X70 pipeline steel welded joints[J].Transactions of The China Welding Institution,2011,32(10):13-16. |
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| Authors: | KONG Dejun WU Yongzhong and LONG Dan |
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| Affiliation: | KONG Dejun,WU Yongzhong,LONG Dan(College of Mechanical & Energy Engineering,Jiangsu Polytechnic University,Changzhou 213016,China) |
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| Abstract: | The surfaces of X70 pipeline steel welded joints were processed with laser shock and its stress corrosion sensitivity was investigated in NACE saturated H2S solutions by slow strain rate testing(SSRT).The fracture surfaces were analyzed with scanning electric microscope(SEM).The results show that the X70 pipeline steel welded joints in primitive state is brittle fracture.The cracks of tensile fracture is stress corrosion cracking.The mechanical properties of the X70 pipeline steel welded joints after laser ... |
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| Keywords: | X70 pipeline steel welded joint laser shock processing stress corrosion |
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