Abstract
T110 experimental high-strength weldable titanium alloy was developed. Distribution of alloying elements and impurities in length and section of 400 mm diameter ingots from alloys of Ti-Al-Mo-V-Nb-Fe-Zr system, produced by the method of electron-beam melting with an intermediate crucible (EBMC) was investigated. Optimal operating modes of melting, deformation, heat treatment, welding of T110 alloy based on this alloying system were determined in order to obtain required chemical composition, macro-and microstructure, a level of mechanical characteristics. The mechanical and fatigue characteristics for parent metal and welded joints were determined. It was found that by mechanical characteristics the alloy does not comply and by a level of plasticity exceeds VT22 commercial alloy. The cyclic life of T110 titanium alloy for parent material exceeds this characteristic of VT22 alloy. The cyclic life of T110 alloy welded joints does not depend on welding method. The alloy developed is good technological material: it is easily deformed, quenched by air after annealing, good welded by all kinds of welding. In this case the welded joint have a strength level of 0,95 and KCV of 0,8 of a parent metal properties, minimum.Key wordstitaniumalloyspropertiesstrengthfatigueweldingheat treatment
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