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2012 №07 (03) 2012 №07 (05)

The Paton Welding Journal 2012 #07
TPWJ, 2012, #7, 15-18 pages
 
PECULIARITIES OF STRUCTURE AND MECHANICAL HETEROGENEITY IN EB-WELDED JOINTS OF 1201-T ALLOY

Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 7, 2012 (July)
Pages                      15-18
 
 
Authors
V.R. SKALSKY1, L.R. BOTVINA2 and I.N. LYASOTA1

1H.V. Karpenko Physico-Mechanical Institute, NASU, Lvov, Ukraine
2A.A. Baikov Institute of Metallurgy and Materials Science, RAS, Moscow, Russia
 
 
Abstract
The peculiarities of microstructure and distribution of microhardness of weld and heat-affected zone metal of welded joints of 1201-T alloy, produced using electron beam welding at different values of heat input, were studied. Using plotted temperature fields the running of phase transformations occurred in welding was analyzed. It was established that due to change of cooling rate across the thickness of plates the microstructure of near-weld zone in upper and lower parts of welded joint were considerably different. The increase of heat input of welding facilitates recrystallization processes which leads to increase of heat-affected zone.
 
 
Keywords: electron beam welding, aluminium alloy, heat-affected zone, weakening, temperature field, structure and mechanical heterogeneity, microstructure
 
 
Received:                28.11.11
Published:               28.07.12
 
 
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