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Information × Registration Number 0221U102380, 0119U102344 , R & D reports Title Patterns of the influence of an external magnetic field on the formation, structure and properties of the titanium alloy VT22 with argon-arc surfacing with powder wire. popup.stage_title Head Scgwab Sergii L., Registration Date 01-02-2021 Organization E.O.Paton Elektric Welding Institute National Academy of scinces of Ukraine popup.description2  Comparison of weld metal microstructures obtained by welding with and without magnetic control showed that the use of an alternating magnetic field allows to regulate not only the size of the weld, but also to influence the crystallization conditions of the weld metal, contributing to a more uniform and homogeneous structure. Thus, when welding without the use of a magnetic field, the intragrain structure is heterogeneous, it has areas with intense decay and high density of lamellar martensitic phases, alternating with light areas where the density of martensitic phases is less, ie the decay of β-solid solution is uneven. Under the influence of an alternating magnetic field on the metal of the welding bath, a large uniformity of decomposition of the solid solution and the formation of a more homogeneous structure is achieved. To stabilize the structure and obtain optimal mechanical characteristics after performing surfacing, the connection was subjected to heat treatment according to the mode: heating in a furnace at a temperature of 750 ºC, holding for 1 h, cooling in air. As a result of annealing, the structure is stabilized, increases the ductility and toughness of the joints. The mechanical properties of the welded joints have satisfactory strength and toughness at 1100 MPa and 13.7 J/cm2, respectively. Product Description popup.authors Selin Roman V popup.nrat_date 2021-02-01 Close