Condition evaluation of steel X65 in one of the sections of “Soyuz” gas main after long-term operation-Reference-Cited by-同舟云学术

Condition evaluation of steel X65 in one of the sections of “Soyuz” gas main after long-term operation

Published:2018-07-01 Issue:3 Volume:62 Page:78-82
ISSN:1804-1213
Container-title:Koroze a ochrana materialu
language:en
Short-container-title:

Author:

Maruschak P.¹,Bishchak R.²,Maruschak O.²,Draganovská D.³,Pylypenko A.⁴

Affiliation:

1. Ternopil Ivan Pul’uj National Technical University , Ternopil

2. Ivano-Frankivsk National Technical University of Oil and Gas , Ivano-Frankivsk

3. Technical University of Košice , Košice

4. National University of Life and Environmental Sciences of Ukraine , Kyiv

Abstract

Abstract The basic regularities in deformation and fracture of pipe steel X65 are revealed by testing specimens from the pipe fragment cut during the repair of the “Soyuz” gas main after 30 years of operation. It is shown that the pipe steel slightly changes its properties when the gas main is operated under the influence of working stresses and environmental factors. Structural degradation and micro-defects accumulated in the pipe wall were scattered, indicating that the material retains sufficient plasticity that allows it to resist fracture processes and the nucleation of macrocracks.

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science

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