| 1Cr5Mo钢弯管开裂原因分析 |
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| 引用本文： | 黄长江,方德明,李颖. 1Cr5Mo钢弯管开裂原因分析[J]. 理化检验(物理分册), 2009, 45(2): 101-103 |
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| 作者姓名： | 黄长江 方德明 李颖 |
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| 作者单位： | 浙江工业大学,化机研究所,杭州,310014 |
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| 摘 要： | 采用化学成分分析、力学性能测试、金相分析、断口形貌观察和断口波谱成分分析等方法对1Cr5Mo钢工艺管线弯头开裂原因进行了分析，并用有限元法计算分析了管线弯头的应力分布。结果表明，弯管材料成分中含碳量偏高，导致其塑性较差。在介质腐蚀下，弯管的上弯头内壁出现裂纹，在较高应力作用下裂纹不断扩展，最终形成穿透性裂纹，是典型的应力腐蚀开裂。
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| 关 键 词： | 弯管 断口 应力腐蚀 有限元分析 |
Cracking Reason Analysis of 1Cr5Mo Steel Elbow |
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| HUANG Chang-jiang,FANG De-ming,LI Ying. Cracking Reason Analysis of 1Cr5Mo Steel Elbow[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2009, 45(2): 101-103 |
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| Authors: | HUANG Chang-jiang FANG De-ming LI Ying |
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| Affiliation: | Institute of Process Equipment and Control Engineering;Zhejiang University of Technology;Hangzhou 310014;China |
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| Abstract: | The chemical composition,mechanical properties,metallurgical,fracture appearance as well as fracture spectrum of an 1Cr5Mo elbow was experimentally analyzed.An finite element method was used to investigate the stress distribution of the elbow,in order to analyze the causes for its fracture.The results showed that because the elbow was of higher carbon content and of worse plasticity.So the cracking initiated in the inside wall of the tube under the corrosion of the medium,and gradually spreaded in the high ... |
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| Keywords: | elbow fracture stress corrosion finite element analysis |
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