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Russian scientists obtain steel with increased strength and ductility

The material demonstrates excellent mechanical properties

MOSCOW, October 5. /TASS/. A team of scientists from the Research Institute of Materials Science and Innovative Technologies at Belgorod State University obtained medium-manganese steel with increased strength and ductility, the properties of its structure will improve the safety and reliability of load-bearing structures of buildings and constructions, reported the press service of the university on Tuesday.

"The material demonstrates excellent mechanical properties: a high yield point of 920 MPa, a tensile strength of 1,440 MPa and an elongation of 32%," the press service quoted data on the characteristics of the new material  presented by head of the research institute and Doctor of Physics and Mathematics Rustam Kaybyshev.

During testing of new steel, researchers discovered the possibility of using the martensite arising from deformation — a special type of microstructure in metal — as an indicator of the overall deformation of the entire structure. It was discovered that the dependence of the proportion of martensite and the deformation itself is almost linear. This connection allows the proportion of deformation-induced martensite to be used as an indicator of the overall deformation of the supporting structures.

The system of sensors for remote monitoring of the state of load-bearing structures will be in demand in various fields of industry and construction, for example, for monitoring hard-to-reach elements of the stressed structure of tankers, says Andrey Belyakov, a leading researcher and Doctor of Physics and Mathematics.

Talking about the prospects for the implementation of the invention, Belyakov noted that receiving data remotely from a control point can provide comprehensive information about the need for urgent repair of any unit, and the accuracy and locality of the method allow the use of spot repair where necessary, the press service reported.

Modern modeling methods will allow to equip the most vulnerable areas with sensors already at the design stage, which will increase the safety and reliability of any supporting structures.