Crack Resistance of High-Strength Steel and Breakage of a Gas Pipeline / Bogatov A. A. // METALLURGIST. - 2017. - V. 61, l. 1-2. - P. 47-52.

ISSN/EISSN:

0026-0894 / 1573-8892

Type:

Article

Abstract:

The available methods for identifying the type of failure of a 15-20 MPa gas pipeline used to evaluate the crack resistance of X90, X100, and D110 high-strength steels cannot reliably predict the arrest of a main crack over the length of two or three pipes. Ductile fracture mechanics is used to determine the length of the plastic zone, the stress state, rate and degree of strain, and damage of the metal at the front of a growing macrocrack. A new fracture criterion based on plasticity diagram is proposed. The new approach to the evaluation of the crack resistance of steel reduces the growth rate of the main crack to less than the decompression rate of a gas pipeline after breakage and arrest of the main crack.

Author keywords:

crack resistance; main crack; gas main; metal damage; plasticity diagram; damage accumulation model; crack-tip radius; radial metal flow; stress state; shear-strain intensity; shear strain

DOI:

10.1007/s11015-017-0452-6

Web of Science ID:

ISI:000402457200007

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAY
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
EISSN	1573-8892
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	omd@urfu.ru
Funding-Acknowledgement	Program 211 of the Government of the Russian Federation {[}02.A03.21.0006]
Funding-Text	This study was carried out in line with State Assignment No. 11.1369.2014/K of 7.18.2014 (State registration No. 11 4122470051) and supported by Program 211 of the Government of the Russian Federation (Agreement No. 02.A03.21.0006).
Number-of-Cited-References	4
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Journal-ISO	Metallurgist
Doc-Delivery-Number	EW4FK