Analysis of the Effect of Cooling Intensity Under Volume-Surface Hardening on Formation of Hardened Structures in Steel 20GL
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Computer simulation of the kinetics of thermal processes and structural and phase transformations in the wall of a bogie side frame produced from steel 20GL is performed with allowance for the differences in the cooling intensity under volume-surface hardening. The simulation is based on the developed method employing the diagram of decomposition of austenite at different cooling rates. The data obtained are used to make conclusion on the effect of the cooling intensity on propagation of martensite structure over the wall section.
Key wordsbogie side frame wall volume-surface hardening cooling intensity structural and phase transformations kinetics of thermal processes nonstationary nonlinear formulation
The work has been performed with financial support of the ministry of Education and Science of the Russian Federation within implementation of the Federal Target Program “Studies and Developments in Priority Directions of Advancement of the Scientific and Engineering Complex of Russia in 2014 – 2020,” Agreement No. 14581210009, Unique Identifier of the Agreement RFMEF1581140009.
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