Experimental research steel grade «Steel 45» to abrasion wear, depending on the exit angle macrostructure fibers on the contact surfaceMaksim Gennadievich Allenov, Dmitrii Gennadievich Allenov and Oleg Aleksandrovich BelokurovMATEC Web Conf., 129 (2017) 02025DOI: https://doi.org/10.1051/matecconf/201712902025