Development and Research of Bainetic Steels for Railway Rails

Keywords

316L, CoCrMo, Ti6Al4V, chemical composition, mechanical properties

Abstract

The strength of pearlite rail steels has reached its limit. An increase in the carbon content will affect the impact strength and weldability of rail materials. Thus, there is a need for other alternative materials. The use of bainite steel, which provides both high strength and excellent plasticity, is considered one of the most promising areas. As a result, recommendations were presented regarding the chemical composition for further production of experimental ingots. From the results of the microstructure analysis, it was established that test steel No. 1 has a pearlite structure with areas of coarse-plate pearlite and austenite along the grain boundaries, test steel No. 2-4 mainly has a structure of granular bainite and residual austenite.

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