| 魏氏组织对20#碳钢H2S应力腐蚀开裂性能的影响 |
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| 引用本文： | 朱天寿,胡兴民,吕江,黄淑菊,张书成.魏氏组织对20#碳钢H2S应力腐蚀开裂性能的影响[J].天然气工业,2006,26(9):122-124. |
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| 作者姓名： | 朱天寿 胡兴民 吕江 黄淑菊 张书成 |
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| 作者单位： | 1.中国石油长庆油田公司；2.中国石油长庆油田公司第一采气厂；3.西安交通大学金属材料强度国家重点实验室 |
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| 摘 要： | 文章对H2S-CO2-H2O腐蚀环境下发生H2S应力腐蚀的20＃碳钢弯管（无缝钢管）进行了成分、组织、拉伸、硬度和应力腐蚀开裂等性能的试验研究，并与同材质、同时投产、腐蚀环境基本相似而未发生应力腐蚀开裂的在役弯管及未使用的新弯管作对比，结果表明魏氏组织是引起20＃钢发生应力腐蚀开裂的主要原因；正火能消除魏氏组织，降低钢的应力腐蚀开裂敏感性。
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| 关 键 词： | 低碳钢 无缝钢管 管道 硫化氢腐蚀 应力腐蚀 魏氏组织 正火 |
| 收稿时间： | 2006-05-25 |
THE EFFECT OF WIDMANSTATEN STRUCTURE ON H2S AND STRESS CORROSION (SSC) CRACKING FOR 20# STEEL GAS PIPELINE |
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| Zhu Tianshou,Hu Xingmin,Lu Jiang,Huang Shuju,Zhang Shucheng.THE EFFECT OF WIDMANSTATEN STRUCTURE ON H2S AND STRESS CORROSION (SSC) CRACKING FOR 20# STEEL GAS PIPELINE[J].Natural Gas Industry,2006,26(9):122-124. |
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| Authors: | Zhu Tianshou Hu Xingmin Lu Jiang Huang Shuju Zhang Shucheng |
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| Affiliation: | 1.PetroChina Changqing Oilfield Company; 2.The No.1 Gas Production Plant of PetroChina Oilfield Company; 3.The State Key Laboratory of Mechanical Behaviors, Xi'an Jiaotong University |
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| Abstract: | As SSC (sulfide and stress corrosion) cracking happened to 20# steel pipe under the corrosion environment of H_2S-CO_2-H_2O, test study has been carried out on the chemical composition and microstructure, the tensile property, hardness and susceptibility for SSC of the speciments. The comparison has also made between the newly-made tube and the employed one under the same conditions. From the result of the study, it shows that the main reason resulting in SSC is Widmanstaten structure, and normalizing can help relieve the bend pipe from both Widmanstaten structure and SSC. |
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| Keywords: | mild steel seamless steel tube pipeline H_2S corrosion stress corrosion Widmanstaten normalizing |
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