Analysis of weld joints made of titanium alloy GRADE 2 produced by electron beam welding

[摘要] Selected properties of welded joints of 2 mm thick titanium alloy Grade 2 produced by different welding parameters of electron beam welding were investigated. The visual inspection, macro and micro analysis, tensile strength test and microhardness measurements were performed. Samples manufactured by appropriate welding parameters had no internal defects, heat-affected zone (HAZ) was narrow and transformation from α phase to β phase was observed in this area. The failure occurred in the base metal during tensile test, while maximum ultimate tensile strength reached 454,3 MPa.

[学科分类] 金属与冶金

[关键词] titanium Grade2;electron beam welding;mechanical properties;structural analysis