Influence of the thickness of nanolayers in wear-resistant layer of Ti-TiN-(Ti,Cr,Al)N coating on the tool life and wear pattern of the carbide cutting tools in steel turning

Abstract The paper discusses the influence of the thickness of nanolayers in a wear-resistant layer of the Ti-TiN-(Ti,Cr,Al)N multilayered composite coating on the coating and tool cutting properties in turning 1045 steel. The coatings with nanolayer thickness in the range of 10–302 nm were investigated. The studies showed that with a decrease in the nanolayer thickness, the cutting tool life increased. The tests revealed an optimal nanolayer thickness with regard to the tool life under the given cutting conditions, and it was 16 nm. With a further decrease in the nanolayer thickness to 10 nm, the tool life reduced.