The Strengthening of Surface Layer by the Impulse Laser Irradiation

Abstract

Wear resistance and durability of the products depend on the nature of solid solution and microstructure. Materials with optimum alloyed solid solution and fine particles, usually carbide inclusions have minimal wear. Such structure is difficult to obtain using traditional method of manufacturing. Blanks of alloyed steels have coarse grains and carbide inclusions of undesirable shape arranged discretely. It is impossible to change such a microstructure. Therefore the purpose of the present work was to create a desirable microstructure using micro- graphical laser beam treatment and to evaluate influence of the treatment regimes and point drawing to wear resistance of a surface layer.