Abstract
General regularities in the failure kinetics of steel of main gas pipelines (17GS) are established using the method of complete stress-strain curves, meanwhile in-service degradation of metals is taken into account. The influence of material degradation on material properties under static tensioning is considered using two independent approaches: The phenomenological model of damage accumulation in metals, and the fractographic analysis method. The accumulation of in-service damage is found to increase a degree of material opening and lead to partial "embrittlement" of the steel matrix due to the microdefects accumulation in the vicinity of metal cracking caused by hydrogenation.
Original language | English |
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Title of host publication | AIP Conference Proceedings |
Publisher | American Institute of Physics Inc. |
Pages | 399-402 |
Number of pages | 4 |
Volume | 1623 |
ISBN (Print) | 9780735412606 |
DOIs | |
Publication status | Published - 2014 |
Event | International Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Russian Federation Duration: 3 Sep 2014 → 5 Sep 2014 |
Other
Other | International Conference on Physical Mesomechanics of Multilevel Systems 2014 |
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Country | Russian Federation |
City | Tomsk |
Period | 3.9.14 → 5.9.14 |
Keywords
- Deformation
- Degradation
- Fracture
- Main gas pipeline
- Strength
ASJC Scopus subject areas
- Physics and Astronomy(all)