Effect of submicrocrystalline state on strength and impact toughness of low-carbon 12GBA steel / Safarov I. M.,Korznikov A. V.,Sergeev S. N.,Gladkovskii S. V.,Borodin E. M. // PHYSICS OF METALS AND METALLOGRAPHY. - 2012. - V. 113, l. 10. - P. 1001-1006.

ISSN/EISSN:

0031-918X / нет данных

Type:

Article

Abstract:

The effect of intense warm deformation on the structure and mechanical properties of low-carbon 12GBA steel was investigated. A submicrocrystalline (SMC) structure with an average element size of 0.3 mu m was formed in the steel by isothermal overall forging. The formation of the SMC structure resulted in a sharp increase in strength by a factor of two to three in relation to the initial coarse-grained state while retaining a sufficient level of plasticity and impact toughness. After further annealing, steels exhibit an improved set of properties; i.e., as the strength decreases slightly, the plasticity increases sharply. Impact tests at low temperatures have shown the significant advantage of the SMC state of the steel over the coarse-grained state in the impact toughness. It is established that the cold resistance in the SMC state increases because the crack propagation prevails in the overall sample fracture.

Author keywords:

submicrocrystalline materials; low carbon steel; impact toughness; brittle-ductile transition

DOI:

10.1134/S0031918X12100109

Web of Science ID:

ISI:000309687600011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	OCT
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	ilfat@anrb.ru
ResearcherID-Numbers	Korznikov, Alexander/F-1473-2014 Gladkovsky, Sergei/E-5731-2016
ORCID-Numbers	Gladkovsky, Sergei/0000-0002-3542-6242
Funding-Acknowledgement	Presidium of RAS {[}25]; IES, Ural Branch, Russian Academy of Science; IFTPN, Siberian Branch, Russian Academy of Sciences {[}12-C-1-1-30]
Funding-Text	The work was performed with a partial support from the Program of the Presidium of RAS, grant no. 25, and by the Integration Project of IES, Ural Branch, Russian Academy of Science and IFTPN, Siberian Branch, Russian Academy of Sciences, grant no. 12-C-1-1-30.
Number-of-Cited-References	6
Usage-Count-Since-2013	11
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	018UB