The Paton Welding Journal, 2014, №03



2014 №03 (02)

DOI of Article 10.15407/tpwj2014.03.03

2014 №03 (04)

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The Paton Welding Journal, 2014, #3, 16-20 pages

TECHNOLOGICAL PECULIARITIES OF WELDING OF WROUGHT MAGNESIUM ALLOYS BY ELECTRON BEAM IN VACUUM

A.A. BONDAREV and V.M. NESTERENKOV

E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
 
 
Abstract
Magnesium alloys find ever wider application in different fields of industrial production, especially when products should have the lowest mass characteristics. Use of magnesium alloys for manufacture of such structures is the most challenging, but in this case, the technologies of their manufacture including also processes of welding using different methods, should be available and reliable. At the present time many specialists attribute the EBW to the category of high technologies. Firstly, the EBW process is carried out under the conditions of vacuum environment, which absolutely eliminates any oxidizing processes of liquid metal in weld pool. Moreover, during melting in vacuum the refining purification of molten metal from harmful impurities takes place, and strength characteristics of joints are the highest in this case. In the present work the results of experimental investigations of weldability of wrought magnesium alloys of different thicknesses produced using electron beam are given. The influence of the system of alloying and parameters of mode on formation of welds and sizes of penetration zone of billets of different thickness was shown. The strength characteristics of welded butt joints were determined. 8 Ref., 4 Tables, 6 Figures.
 
 
Keywords: electron beam welding, magnesium alloys, welding modes, strength of welded joints, microstructure of weld and base metal
 
 
Received:                10.07.13
Published:               28.03.14
 
 
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