TY JOUR TI Application of metallophysical methods of certification of roller drive materials KW roller KW roller drive KW linear actuator KW microhardness KW chemical composition KW microstructure JO Science intensive technologies in mechanical engineering AU Ivanova, G.V. AU Tsvetkova, G.V. AU Tarasenko, E.A. AU Evsim, M.G. PY 2025 IS 2025 PB Bryansk State Technical University