TY JOUR TI Thermal treatment innovation technology of bogie side frame in freight car ensuring its fatigue strength increase KW side frame KW freight car KW thermal treatment KW heat process kinetics KW structure-phase transformations JO Science intensive technologies in mechanical engineering AU Savrukhin, A.V. AU Evseev, D.G. AU Neklyudov, A.N. PY 2019 IS 2019 PB Bryansk State Technical University