| J55油管断裂失效分析 |
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| 引用本文： | 金磊,张传旭,杨中娜,庄传晶,金广龙.J55油管断裂失效分析[J].失效分析与预防,2016,11(2):91-94,132. |
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| 作者姓名： | 金磊 张传旭 杨中娜 庄传晶 金广龙 |
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| 作者单位： | 中海油(天津)管道工程技术有限公司, 天津 300452 |
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| 摘 要： | 通过对油管断裂处及远离断裂处的金相组织、硬度等检测和对比分析对油管所用材料化学成分分析,并对断口的宏微观断裂特征及裂纹形态分析,确定油管失效模式为应力腐蚀开裂。对油管的加工制造过程和现场服役环境及工作特点进行分析,油管断裂处存在有害组织为其断裂的主要原因。有害组织的产生很可能是油管在生产制造过程中的轧制环节接触了冷流体或是在油管附近进行纵火作业导致的。
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| 关 键 词： | J55油管 应力腐蚀 回火马氏体 |
| 收稿时间： | 2016-01-08 |
Fracture Failure Analysis of J55 Oil Tube |
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| JIN Lei,ZHANG Chuan-xu,YANG Zhong-na,ZHUANG Chuan-jing,JIN Guang-long.Fracture Failure Analysis of J55 Oil Tube[J].Failure Analysis and Prevention,2016,11(2):91-94,132. |
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| Authors: | JIN Lei ZHANG Chuan-xu YANG Zhong-na ZHUANG Chuan-jing JIN Guang-long |
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| Abstract: | Microstructure examination, hardness testing, chemical composition analysis, and macro and micro observation were carried out to analyze the failure mode of a J55 oil tube. The results show that the failure mode of the J55 oil tube was stress corrosion fracture. The failure cause of the tube was analyzed based on analyzing the manufacturing process, service environment and working mechanism. Local abnormal microstructure near fracture surface is the main reason for the fracture. The local abnormal microstructure might be caused by contacting cold liquid during the process of rolling or burning near the tube. |
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