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

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

• металографічні дослідження
• електронно-променеве зварювання
• високоміцні титанові сплави
• макроструктура
• мікротвердість
• зона термічного впливу