%0 Journal Article %T INVESTIGATION OF CONTACT AREA AT STEEL C12M CUTTING BY MINERAL-CERAMICS VOK-71 %A Sekletina, L.S. %A Yanyushkin, A.S. %A Gartfel'der, V.A. %A Yanyushkin, A.R. %K turning, hardened steel, mineral-ceramics, contact area, mechanism of wear %J Bulletin of Bryansk state technical university %D 2019 %N 2019 %P 5 %I Bryansk State Technical University