Studying recovery processes in a strain-hardened Al-Mg-Mn-Fe-Si alloy / Pugacheva N. B.,Vichuzhanin D. I.,Kalashnikov S. T.,Ivanov A. V.,Smirnov S. V.,Frolova N. Yu. // PHYSICS OF METALS AND METALLOGRAPHY. - 2016. - V. 117, l. 9. - P. 920-926.

ISSN/EISSN:

0031-918X / 1555-6190

Type:

Article

Abstract:

The material of a shell structure subjected to 20-year use under ambient conditions has been studied. The structure and mechanical characteristics of a strain-hardened AMg6 alloy, as well as the effect of subsequent holdings of this alloy for 10-3000 h at temperatures of 50, 70, 80, 100, 130, 150, 180, and 220A degrees C, on changes in its dislocation structure and mechanical characteristics have been investigated. It has been shown that, in the structures under study, the AMg6 alloy has a cellular structure with a high density of dislocations and the ultimate strength sigma(u) = 445.5 +/- 2.5 MPa, the proof stress sigma(0.2) = 326.5 +/- 3.5 MPa, and the relative elongation delta = 11.7 +/- 0.5\%. Polygonization in the alloy occurs at a temperature of 220A degrees C and the initial stage of the recovery process corresponds to a temperature range of 50-100A degrees D in which the softening process can be divided into two stages, i.e., stage (1) of active softening due to the interaction of point defects with each other and stage (2) of the stabilization of the characteristics of the alloy.

Author keywords:

aluminum-based alloy; microstructure; intermetallic compound; hardness; strength; ductility; recrystallization; recovery process; electric resistivity SEVERE PLASTIC-DEFORMATION; SC-AG ALLOY

DOI:

10.1134/S0031918X16090076

Web of Science ID:

ISI:000385023600010

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1555-6190
Keywords-Plus	SEVERE PLASTIC-DEFORMATION; SC-AG ALLOY
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	nat@imach.uran.ru
ResearcherID-Numbers	Frolova, Nataluy/J-6792-2013 Smirnov, Sergey/D-5460-2016
ORCID-Numbers	Frolova, Nataluy/0000-0002-5060-3278 Smirnov, Sergey/0000-0002-2083-5377
Number-of-Cited-References	13
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	5
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	DY3VM