The cracking analysis of refined oil pipeline elbow

Jianwei Jia; Hui Huang; Jian Liu; Liqiu Chen

doi:10.1117/12.2620207

9 December 2021 The cracking analysis of refined oil pipeline elbow

Jianwei Jia, Hui Huang, Jian Liu, Liqiu Chen

Proceedings Volume 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021); 120302E (2021) https://doi.org/10.1117/12.2620207
Event: Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 2021, Hefei, China

Abstract

Taking the cracked and unused hot-bend elbows in the same batch as the research object, comparing the wall thickness, mechanical properties (tensile, impact, hardness), chemical composition, and microstructure (metallographic, grain size) of the two elbows. Furthermore, the fracture morphology and energy spectrum analysis were carried out on the cracked elbow. The results show that the cracked elbow has a martensite structure, which leads to lower material toughness. Under the influence of a large additional bending load, it becomes the source of cracking, and finally leads to brittle fracture of the elbow.

Citation Download Citation

Jianwei Jia, Hui Huang, Jian Liu, and Liqiu Chen "The cracking analysis of refined oil pipeline elbow", Proc. SPIE 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 120302E (9 December 2021); https://doi.org/10.1117/12.2620207

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