Influence of in-service degradation on strain localization in steel of main gas pipelines

Pavlo Maruschak, Roman Bishchak, Sergey Panin, Andriy Pylypenko, Abdellah Menou, Iryna Danyliuk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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 languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc.
Pages399-402
Number of pages4
Volume1623
ISBN (Print)9780735412606
DOIs
Publication statusPublished - 2014
EventInternational Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Russian Federation
Duration: 3 Sep 20145 Sep 2014

Other

OtherInternational Conference on Physical Mesomechanics of Multilevel Systems 2014
CountryRussian Federation
CityTomsk
Period3.9.145.9.14

Keywords

  • Deformation
  • Degradation
  • Fracture
  • Main gas pipeline
  • Strength

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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