Abstract
Porosity is one of the most common and harmful defects in laser welding of titanium alloy. It is easy to cause stress concentration and reduce the comprehensive properties of the weld. Because of its own characteristics, titanium alloy is easy to produce welding defects such as cracks, pores and lack of fusion in the welding process, which has a great impact on the performance of welded joints. As a commonly used connection method in titanium alloy processing, welding joint is relatively thin and weak parts in titanium alloy structure, it is also the main part of structural failure. In this paper, according to the current laser welding method of titanium alloy, combined with the production practice, the causes and hazards of common porosity welding defects in laser welding of titanium alloy are analyzed, and the preventive measures and treatment methods are put forward.
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