Separations in steels subjected to controlled rolling, followed by accelerated cooling / Farber V. M.,Khotinov V. A.,Belikov S. V.,Selivanova O. V.,Lezhnin N. V.,Morozova A. N.,Karabonalov M. S.,Zhilyakov A. Yu. // PHYSICS OF METALS AND METALLOGRAPHY. - 2016. - V. 117, l. 4. - P. 407-421.

ISSN/EISSN:

0031-918X / 1555-6190

Type:

Article

Abstract:

Zones on the fracture surfaces of Charpy specimens and profiles of the fractures of these specimens are examined using impact-bending tests carried out in the temperature range of +20 to-90A degrees C and fractography. The specimens were cut out of hot-rolled plates produced from 05G2B super-low-carbon steels that contained Ti, Nb, V, and Cu microadditives using controlled rolling, followed by accelerated cooling. A detailed analysis of separations, including a study of the morphology, number, area of separations, and the surrounding stress-relaxation zones, and the structure of the walls, has allowed us to identify the mechanisms of the origination and growth of the separations. It has been found that the correlated changes in the length, width, and depth of the separations are accompanied by the formation and expansion of the stress-relaxation zones around the separations. The rate of expansion of the area of these zones is higher than that of the area of the separations, which favors the macroplastic fracture of the specimens.

Author keywords:

separations; super-low-carbon steels; crack; fracture surface; stress-relaxation zone; fracture profile X80 PIPELINE STEELS; IMPACT TOUGHNESS; CHARPY IMPACT; DELAMINATION; STRENGTH; RESISTANCE

DOI:

10.1134/S0031918X16040050

Web of Science ID:

ISI:000376279300011

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1555-6190
Keywords-Plus	X80 PIPELINE STEELS; IMPACT TOUGHNESS; CHARPY IMPACT; DELAMINATION; STRENGTH; RESISTANCE
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	khotinov@yandex.ru
ResearcherID-Numbers	Morozova, Anna/N-8993-2017 Zhilyakov, Arkadiy/H-2120-2016
ORCID-Numbers	Morozova, Anna/0000-0002-7071-2527 Zhilyakov, Arkadiy/0000-0002-7779-9637 Karabanalov, Maxim/0000-0001-6619-2816
Number-of-Cited-References	37
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	9
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	DM3XF