Effect of long-term operation on steels of main gas pipeline Reduction of static fracture toughness

被引：6

作者：

Maruschak, P. O. ^{[1
]}

Panin, S. V. ^{[2
,5
]}

Chausov, M. G. ^{[3
]}

Bishchak, R. T. ^{[4
]}

Polyvana, U. V. ^{[1
]}

机构：

[1] Ternopil Ivan Puluj Natl Tech Univ, Ternopol, Ukraine

[2] RAS, Inst Strength Phys & Mat Sci, Tomsk, Russia

[3] Natl Univ Life & Environm Sci Ukraine, Kiev, Ukraine

[4] Ivano Frankivsk Natl Tech Univ Oil & Gas, Ivano Frankivsk, Ukraine

[5] Natl Res Tomsk Polytech Univ, Tomsk, Russia

来源：

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING | 2017年 / 38卷

关键词：

In-service degradation; Damage; Deformation; Main gas pipeline; FAILURE; DEGRADATION; OIL;

D O I：

10.1016/j.jngse.2016.12.015

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The effect of the long-term operation on changes in the parameters of fracture toughness and a tendency for a delayed fracture of the steel of main gas pipelines is investigated. Based on the method of the full strain diagrams the general regularities of operational degradation influence onto the static fracture toughness and microscale failure mechanisms of 17MnSi steel after long term operation have been established. Generalization of results on the influence of absorbed hydrogen onto the pipeline steel structure and fracture pattern made possible to systemize the data on dispersed damage accumulation. The scheMatization of fracture mechanisms of 17MnSi steel is offered. The proposed approaches to the study of static fracture toughness of the steel of the main gas pipelines can be used in the evaluation of their technical conditions and planning of their overhaul. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：182 / 186

页数：5

共 20 条

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