COMPARATIVE MECHANICAL AND METALLOGRAPHIC INVESTIGATIONS OF WELDED COMPOUNDS WITH HIGH-STRENGTH TITANIUM ALLOYS OBTAINED BY METHOD OF TIG AND EBW

Олексій Вікторович Федосов, Олена Володимирівна Карпович

Abstract


The paper presents the results of mechanical and metallographic studies of the welded joints structure of the high-strength titanium alloys 20-30 mm width. In the paper is shown that with TIG and EBW welding of high-strength titanium alloys, there is a tendency to form defects in the weld metal. The results of metal chemical composition are shown in the paper as well thermal influence, micro- and macrostructure of welded joints and the measurement of hardness are presented. Recommendations are developed, which in a great degree exclude the appearance of defects in welded joints and increase their performance characteristics.


Keywords


metallographic studies of electron-beam welding; high-strength titanium alloys; macrostructure; micro hardness, heat-affected zone

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DOI: https://doi.org/10.32620/aktt.2017.4.05