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Condition evaluation of steel X65 in one of the sections of “Soyuz” gas main after long-term operation
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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.
Walter de Gruyter GmbH
Title: Condition evaluation of steel X65 in one of the sections of “Soyuz” gas main after long-term operation
Description:
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.
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