Composition of oxide films of laser pulse treatment zone of high-speed steels and its influence on metal-cutting tool efficiency

AES results of a surface of laser pulse treatment zone of high-speed steels on air are presented. Formation of oxide films FeO, Fe2O3 and also the films of higher oxides of Cr, Mo and W, essential redistribution of concentration of alloying elements on depth of laser treatment zone are established. It is shown, that multicomponent oxide film influences on wear intensity of the hardened tool essentially. It is established, that laser treatment on air provides increase of stability of wear-out of the tool in a wide range of cutting speeds, leads to significant expansion of a range of cutting regimes at which decrease of the wear of the hardened tool is reached, minimizes wear intensity of the hardened tool.