Effect of Laser Annealing on Parameters of Hardened Zones and Their Tribological Properties


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Abstract

Metallographic studies of hardened zones of steel 40Kh were carried out. Regression equations were obtained and the surface depth and width of the hardened zones as functions of the beam scanning speed and radiation power at different beam defocusing were plotted with the help of a full factorial experiment. Comparative wear tests showed that, with increasing hardening area to 100% of the friction surface, the wear resistance increases by a factor of 4.47 as compared to normalized steel.

About the authors

V. P. Biryukov

Blagonravov Mechanical Engineering Research Institute

Author for correspondence.
Email: laser-52@yandex.ru
Russian Federation, Moscow, 101990

V. V. Isakov

Baranov Central Institute of Aviation Motors

Email: laser-52@yandex.ru
Russian Federation, Moscow, 111116

A. Y. Fedotov

Baranov Central Institute of Aviation Motors

Email: laser-52@yandex.ru
Russian Federation, Moscow, 111116

D. A. Baulin

Baranov Central Institute of Aviation Motors

Email: laser-52@yandex.ru
Russian Federation, Moscow, 111116

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