Effect of heat-treatment conditions on structural and phase transformations in a two-phase alpha plus beta titanium alloy subjected to thermomechanical treatment / Popov A. A.,Illarionov A. G.,Demakov S. L.,Stepanov S. I.,Karabanalov M. S.,Elkina O. A. // PHYSICS OF METALS AND METALLOGRAPHY. - 2010. - V. 109, l. 6. - P. 655-661.

ISSN/EISSN:

0031-918X / нет данных

Type:

Article

Abstract:

Effect of heat-treatment parameters (heating temperature in a range of 550 to 700A degrees C and holding time from 0.5 to 2 h) on the occurrence of structural and phase transformations in the Ti-6-4 Eli titanium alloy, which was preliminarily subjected to warm rolling at 550A degrees C after quenching from 945A degrees C, has been studied. During the heating of the rolled alloy to 550A degrees C, the formation of recrystallized nanosized grains in the martensitic matrix was found to occur. The increase in the temperature and time of holding favors the activation of recrystallization processes and increase in the size of arising grains to a micron level. It has been found that the decomposition of the alpha' martensite can occur at the expense of both the precipitation of nanosized beta-phase particles via a heterogeneous mechanism (T (h) = 550-600A degrees C) and through the formation of individual beta-phase grains between recrystallized alpha' particles at the higher heating temperatures (650-700A degrees C). The prevalence of one of these processes, namely, recrystallization or decomposition, during the heat treatment of the deformed alloy determines the character of changes of microhardness characteristics.

Author keywords:

titanium alloys; deformation; annealing; recrystallization

DOI:

10.1134/S0031918X1006013X

Web of Science ID:

ISI:000279088200013

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN
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
ResearcherID-Numbers	Stepanov, Stepan/H-3317-2014 Popov, Artemiy/G-3947-2016 Karabanalov, Maxim/M-7422-2013 Elkina, Olga/J-5157-2013
ORCID-Numbers	Stepanov, Stepan/0000-0002-0554-8775 Popov, Artemiy/0000-0001-6171-1701 Karabanalov, Maxim/0000-0001-6619-2816 Elkina, Olga/0000-0001-9222-6653
Funding-Acknowledgement	Federal Agency for Science and Innovations
Funding-Text	This study was supported by the Federal Agency for Science and Innovations, the Federal Target Program ``Scientific and Pedagogical Personnel of Innovative Russia{''} in 2009-2013.
Number-of-Cited-References	14
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	30
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	614VP