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)
V.R. SKALSKY1, L.R. BOTVINA2 and I.N. LYASOTA1
H.V. Karpenko Physico-Mechanical Institute, NASU, Lvov, Ukraine
A.A. Baikov Institute of Metallurgy and Materials Science, RAS, Moscow, Russia
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.
electron beam welding, aluminium alloy, heat-affected zone, weakening, temperature field, structure and mechanical heterogeneity, microstructure
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