Causes and Mechanisms of Fracture of a Main Line Section Made of 17G1S Steel
- Авторлар: Goritskii V.1, Shneiderov G.1, Durneva A.1
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Мекемелер:
- ZAO TsNIIPSK im. Mel’nikova
- Шығарылым: Том 2019, № 10 (2019)
- Беттер: 1143-1150
- Бөлім: Diagnostics and Mechanical Test Techniques
- URL: https://journals.rcsi.science/0036-0295/article/view/173664
- DOI: https://doi.org/10.1134/S0036029519100112
- ID: 173664
Дәйексөз келтіру
Аннотация
Abstract—The cause and the mechanism of formation of a long crack in a linear oil-trunk pipeline section consisting of two longitudinal pipes 1220 mm in diameter made of low-alloy 17G1S steel are comprehensively studied. The length of the crack moving along the longitudinal weld exceeds 3 m. The chemical composition and the mechanical properties of the pipe metal are found to meet the requirements of standards, and the impact toughness at negative temperatures is slightly lower than the standard. The crack moved according to a fatigue mechanism with a predominant grove relief. The main causes of crack nucleation are as follows: a significant stress concentration near the inner weld with distorted geometry of the reinforcing beads and a cyclic character of loading the oil pipeline.
Негізгі сөздер
Авторлар туралы
V. Goritskii
ZAO TsNIIPSK im. Mel’nikova
Email: oem@stako.ru
Ресей, Moscow, 117393
G. Shneiderov
ZAO TsNIIPSK im. Mel’nikova
Хат алмасуға жауапты Автор.
Email: oem@stako.ru
Ресей, Moscow, 117393
A. Durneva
ZAO TsNIIPSK im. Mel’nikova
Email: oem@stako.ru
Ресей, Moscow, 117393