TPWJ, 2018, #3, 25-28 pages
On mechanism of weld metal structure refinement in arc welding under action of magnetic fields (Review)
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #3, 2018 (March)
A.D. Razmyshlyaev1 and M.V. Ageeva2
SHEI «Pryazovskyi State Technical University»
7 Universitetskaya Str., 87500, Mariupol, Donetsk region, Ukraine. E-mail: firstname.lastname@example.org
Donbass State Engineering Academy
72 Akademicheskaya Str., 84313, Kramatorsk, Donetsk region, Ukraine. E-mail: email@example.com
Aim of the work is the analysis of available references on mechanism of refinement of weld structure in arc welding under action of controllable magnetic fields. It is shown that today different authors have various explanations of the facts of refinement of weld metal structural constituents or deposited metal in arc welding under action of a longitudinal magnetic field. There is no single opinion between the authors on the most important factors determining refinement of the weld metal structural constituents in welding under action of the longitudinal magnetic field. It is shown that peculiarities of action of the longitudinal magnetic field on formation of secondary structures in a weld during arc welding also require investigation. It is not determined what is the stage where the weld metal structure refinement takes place under the action of magnetic fields, namely during primary crystallization or during secondary transformations or simultaneously during these two stages. It is necessary to carry out investigations in this direction in order to develop the optimum parameters of the external magnetic fields for weld structure refinement in arc welding. 20 Ref., 1 Figure.
weld metal structure refinement, crystalline particle, external magnetic fields, refinement factor
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