Influence of laser processing of steels on the sizes of nonmetallic inclusions in a strenghened layer

Keywords

steel, laser processing, non-metallic inclusions, strengthening, saturation zones, melting, fragmentation, crushing of inclusions, “satellite” particles.

Cite as

Gubenko S. I., Parusov E. V., and Parusov O. V. Influence of laser processing of steels on the sizes of nonmetallic inclusions in a strenghened layer. Physicochemical Mechanics of Materials. 2026. 62(3), 141-146.

Abstract

Specific features of the influence of laser processing on the sizes and volume fraction of non-metallic inclusions of various types in the strengthened layer of steels are studied. Laser processing of steels allows us to reduce the average size of non-metallic inclusions and the contamination of steel with inclusions in the strengthened zone by 30–50%. For different types of inclusions and steels, parameters which characterize the average sizes of inclusions and their volume fraction in the strengthened layer depending on the laser exposure effect are determined. The mechanisms and features of the transformation of non-metallic inclu¬sions during laser exposure, which contribute to a reduction in their size (crushing during partial dissolution and melting, mechanical crushing of solid or liquid initial inclusions, formation of dispersed “satellite” particles in microcomposite saturation zones of the steel matrix near the initial inclusions) are discussed.

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