Structural Degradation of the Welded Joint of the Gas Main after a Long-Term Operation in Sub-Acid Soil

被引：0
|
作者：
Maruschak, P. O. [1 ]
Bishchak, R. T. [2 ]
Maruschak, O. V. [2 ]
Panin, S. V. [3 ,4 ]
机构：
[1] Ternopil Natl Ivan Puluj Tech Univ, Ruska 56 Str, UA-46001 Ternopol, Ukraine
[2] Ivano Frankivsk Natl Tech Univ Oil & Gas, Karpatska 15 Str, UA-76000 Ivano Frankivsk, Ukraine
[3] RAS, SB, Inst Strength Phys & Mat Sci, Tomsk 634021, Russia
[4] Natl Res Tomsk Polytech Univ, 30 Lenin Ave, Tomsk 634050, Russia
来源：
ALL-RUSSIAN RESEARCH-TO-PRACTICE CONFERENCE ECOLOGY AND SAFETY IN THE TECHNOSPHERE | 2018年 / 115卷
关键词：
METAL; MICROSTRUCTURE; RESISTANCE;
D O I：
10.1088/1755-1315/115/1/012046
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The authors investigated the main regularities in the structural and mechanical degradation of steel and a welded joint of the "Soyuz" gas main in operation. It is established that the defect accumulation kinetics in welds are determined both by technological disruptions in their manufacture and by hydrogenation of the weld during a long operating time. A weakening of the mechanical properties of the weld after a prolonged operation is shown, which in some cases led to the appearance of cracks and fracture of the gas main.
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页数：6
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