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首页> 外文期刊>The Paton Welding Journal >ELECTRON BEAM WELDING AND HEAT TREATMENT OF WELDED JOINTS OF HIGH-STRENGTH PSEUDO-β TITANIUM ALLOY VT19
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ELECTRON BEAM WELDING AND HEAT TREATMENT OF WELDED JOINTS OF HIGH-STRENGTH PSEUDO-β TITANIUM ALLOY VT19

机译：电子束焊接和高强度伪β钛合金焊接接头的热处理VT19

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摘要

Titanium pseudo-β titanium alloys have high strength reaching 1200-1400 MPa in aged state, as well as high adaptability to manufacture in comparison with alloys of pseudo-α- or (α + β)-structure. Such advantages of pseudo-β titanium alloys, typical representative of which is high alloy VT19, make this class of titanium alloys promising for application in new technologies and equipment and during modernization of existing ones. The paper has studied the effect of mode of electron beam welding, modes of preheating and local heat treatment, as well as furnace annealing on properties of welded joints of pseudo-β titanium alloy VT19 produced by electron beam welding. Variation of speed of electron beam welding of alloy VT19 does not allow changing within the significant limits the relation between α- and β-phases in weld metal and heat-affected zone. Electron beam welding in combination with preheating allows regulating the relation between a- and β-phases in welded joint metal and reducing the content of β-phase in weld metal of alloy VT19 from 91 to 53%, as well as increasing the strength of welded joints from 876 to 937 MPa.
机译：钛伪β钛合金具有高强度达到1200-1400MPa的老化状态，与伪α-或（α+β）结构相比，对制造的高适应性。伪-β钛合金的这种优点，典型的代表是高合金VT19，使这类钛合金具有在新技术和设备中应用以及现有技术的现代化。本文研究了电子束焊接，预热和局部热处理模式的影响，以及电子束焊接生产的伪β钛合金VT19焊接接头的炉退火。合金VT19的电子束焊接速度的变化不允许在焊接金属和热影响区域中α-和β相之间的关系改变。电子束焊接与预热结合允许调节焊接接头金属中A-和β相之间的关系，并将合金VT19焊接金属焊料金属含量降低到53％，以及增加焊接的强度从876到937 MPa的关节。

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