Structure and mechanical properties of aging Al-Li-Cu-Zr-Sc-Ag alloy after severe plastic deformation by high-pressure torsion / Kaigorodova L. I.,Rasposienko D. Yu.,Pushin V. G.,Pilyugin V. P.,Smirnov S. V. // PHYSICS OF METALS AND METALLOGRAPHY. - 2015. - V. 116, l. 4. - P. 346-355.

ISSN/EISSN:

0031-918X / 1555-6190

Type:

Article

Abstract:

The structural and phase transformations have been studied in aging commercial aluminum-lithium alloy Al-1.2 Li-3.2 Cu-0.09 Zr-0.11 Sc-0.4 Ag-0.3 Mg in the as-delivered state and after severe plastic deformation by torsion for 1, 5 and 10 revolutions under a high pressure of 4 GPa. Deformation-induced nanofragmentation and dynamic recrystallization have been found to occur in the alloy. The degree of recrystallization increases with deformation. Nanofragmentation and recrystallization processes are accompanied by the deformation-induced decomposition of solid solution and changes in both the nucleation mechanism of precipitation and the phase composition of the alloy. The influence of a nanostructured nanophase state of the alloy on its mechanical properties (microhardness, plasticity, elastic modulus, and stiffness) is discussed.

Author keywords:

severe plastic deformation; high-pressure torsion; aging; recrystallization; supersaturated solid solution decomposition; nanocrystalline structure; boundaries; phase; grain dislocations; vacancies; m MG; LITHIUM; STABILITY; BEHAVIOR; PHASE

DOI:

10.1134/S0031918X15040080

Web of Science ID:

ISI:000353336600005

Соавторы в МНС:

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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	MG; LITHIUM; STABILITY; BEHAVIOR; PHASE
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	dmitrijrasp@gmail.com
ResearcherID-Numbers	Vladimir, Pushin/J-4807-2013 Kaigorodova, Larisa/J-4743-2013 Pilyugin, Vitaly/K-6525-2013 Rasposienko, Dmitriy/A-8354-2016 Smirnov, Sergey/D-5460-2016
ORCID-Numbers	Vladimir, Pushin/0000-0001-7569-0999 Kaigorodova, Larisa/0000-0001-6739-5930 Pilyugin, Vitaly/0000-0002-5150-6605 Smirnov, Sergey/0000-0002-2083-5377
Funding-Acknowledgement	project ``My First Grant{''} of the Russian Foundation for Basic Research {[}14-02-31753]; Innovation Project for Young Scientists of the Presidium of the Ural Branch of the Russian Academy of Sciences {[}14-2-IP-66]; Program of Integration Basic Research of the Ural Branch, Russian Academy of Sciences {[}12-4-2-2011]
Funding-Text	This work was partly supported by project ``My First Grant{''} of the Russian Foundation for Basic Research, project no. 14-02-31753; by the Innovation Project for Young Scientists of the Presidium of the Ural Branch of the Russian Academy of Sciences, project no. 14-2-IP-66; and by the Program of Integration Basic Research of the Ural Branch, Russian Academy of Sciences, project no. 12-4-2-2011.
Number-of-Cited-References	14
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	12
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	CG5MS