TPWJ, 2021, #1, 45-54 pages
Mathematical models of the dependence of mechanical properties on chemical composition of steels for ESW
S.V. Egorova, O.V. Makhnenko, G.Yu. Saprykina and D.P. Syneok
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
The paper deals with the possibility of constructing mathematical models of the dependence of mechanical properties
of silicon-manganese steels designed for ESW, which have high brittle fracture resistance in the HAZ, as well as of the
overheated zone, on chemical composition. Data on mechanical properties of these steels were obtained as a result of
studying the influence of additional alloying (microalloying) of silicon-manganese steel by manganese, chromium, vanadium,
boron, cerium and zirconium, on overheating resistance at electroslag welding. The method of multiple linear
regression was used for construction of mathematical models. Mathematical models were constructed for the following
set of base metal mechanical properties: impact toughness for temperatures of (+20, –40, –60, –70 °С), yield limit,
ultimate strength, relative elongation and reduction in area. For overheated zone at electroslag welding mathematical
models were constructed for impact toughness (KCU and KCV) for temperatures of +20, –60, –70 °С. Initial validation
of the constructed models was performed. 9 Ref., 12 Tables, 2 Figures.
silicon-manganese steels, chemical composition, microalloying, mechanical properties, mathematical
models, electroslag welding
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