TY JOUR TI INCREASING WEAR RESISTANCE OF TAIL BY LASER HARDENING KW laser hardening KW tracks KW hardening KW microhardness KW friction factor KW intensity KW wear KW wear resistance JO Transport engineering AU Biryukov, V.P. AU Yakubovsky, A.A. AU Kulakov, O.I. PY 2025 IS 2025 PB Bryansk State Technical University