Physical Aspects of Surface Layer Changes After Laser Ablation Process

R. Gołębski, P. Boral, P. Paszta Czestochowa University of Technology, 42-201 Częstochowa, Poland

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Laser surface melting is a process that significantly changes the structure and properties of the surface of engineering materials such as stainless steel and hot-rolled 1100MC structural steel. As a result of the impact of the laser beam on the surface, a fine-crystalline layer is formed, characterized by a clear orientation. This process does not affect the chemical composition of the material, which allows for maintaining the original chemical properties while improving other physical parameters of the layer. The melted surface shows increased hardness, which results in better abrasion resistance, which is crucial in engineering applications. These changes are the result of optimizing the laser surface melting process parameters, such as laser power and feed rate, which allows for precise control of the resulting surface structure and its physical properties. The article presents an analysis of changes in the structure and properties of the surface layer of engineering materials under the influence of laser melting. The authors analyzed the effect of laser surface melting process parameters on changes in the values of surface structure parameters and its hardness.

DOI:10.12693/APhysPolA.147.214 topics: laser ablation, microhardness, surface layer, surface functional parameters