Microstructure evolution during warm working of Ti-5Al-5Mo-5V-1Cr-1Fe at 600 and 800 degrees C / Zherebtsov S. V.,Murzinova M. A.,Klimova M. V.,Salishchev G. A.,Popov A. A.,Semiatin S. L. // MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. - 2013. - V. 563, l. . - P. 168-176.

ISSN/EISSN:

0921-5093 / нет данных

Type:

Article

Abstract:

Microstructure evolution during compression to the true height strain 0.29, 0.69, or 1.2 at 600 and 800 C of the beta-rich titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe (VT22) with an initial lamellar microstructure was established using scanning and transmission electron microscopy. It was found that microstructure evolution at both temperatures was controlled primarily by substructure evolution within the beta phase. At 800 degrees C, extensive recovery within the beta phase resulted in the formation of a stable structure comprising subgrains similar to 1.5 mu m in diameter. During deformation at this temperature, lamellae of the alpha phase fragmented via a boundary-grooving mechanism. Due to the sluggish diffusion kinetics, however, spheroidization at 800 degrees C was incomplete. At the lower processing temperature, recovery processes within the beta phase were much slower, leading to greater refinement of the beta matrix. The decomposition of the metastable beta phase during warm working, gave rise to very fine alpha-lath precipitates, which resulted in the formation of an ultrafine microstructure with a grain size of 0.5 mu m. (c) 2012 Elsevier B.V. All rights reserved.

Author keywords:

Titanium alloys; Thermomechanical processing; Microstructure refinement; Speroidization; Precipitation TITANIUM-ALLOYS; COARSENING BEHAVIOR; TRANSITION CLASS; HEAT-TREATMENT; HOT-WORKING; TI-6AL-4V; DEFORMATION; GLOBULARIZATION; FLOW

DOI:

10.1016/j.msea.2012.11.042

Web of Science ID:

ISI:000315063000024

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	FEB 15
Publisher	ELSEVIER SCIENCE SA
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
Keywords-Plus	TITANIUM-ALLOYS; COARSENING BEHAVIOR; TRANSITION CLASS; HEAT-TREATMENT; HOT-WORKING; TI-6AL-4V; DEFORMATION; GLOBULARIZATION; FLOW
Research-Areas	Science \& Technology - Other Topics; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Nanoscience \& Nanotechnology; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
Author-Email	ser\_z@mail.ru
ResearcherID-Numbers	Zherebtsov, Sergey/G-7435-2011 Popov, Artemiy/G-3947-2016 Salishchev, Gennady/G-4767-2016 SEMIATIN, SHELDON/E-7264-2017
ORCID-Numbers	Zherebtsov, Sergey/0000-0002-1663-429X Popov, Artemiy/0000-0001-6171-1701 Salishchev, Gennady/0000-0002-0815-3525
Funding-Acknowledgement	Federal Agency for Education, Russia {[}14.A18.21.1637]
Funding-Text	This work was supported by the Federal Agency for Education, Russia; Grant \#14.A18.21.1637.
Number-of-Cited-References	29
Usage-Count-Since-2013	27
Journal-ISO	Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
Doc-Delivery-Number	091PT