CC BY
2*
ALT'23 The 30th International Conference on Advanced Laser Technologies
LM-P-2
Controlling, optimizing, and scaling the microstructure features by laser treatment under an auxiliary graphite layer
X. Egorova1, A. Sidorova1, K. Rozanov1, D. Sinev1
1-Institute Laser Technology, University ITMO, Kronverksky avenue 49, St. Petersburg, 197101, Russia
Main author email address: [email protected]
Titanium-based materials are highly valued in industries that require a combination of strength and light weight. For components requiring increased wear resistance (such as drills, gears, knives, pistons, etc.), surface hardness and strength are required, while the core requires toughness and ductility, although increasing the hardness of an alloy often reduces its toughness and ductility. In many cases, the simultaneous achievement of high hardness and ductility is not required for the entire structure. This balance of mechanical properties can be achieved using laser technology to form structures with various chemical compositions and microstructures.
During laser irradiation, the heated area on the metal surface is quickly cooled down by the surrounding cold metal, which contributes to efficient heat removal and rapid cooling. This specific approach to laser processing involves complex thermal cycling and rapid solidification, resulting in certain structural features. Numerous hardening methods, including laser surface modification [1,2] and laser cladding [, https://doi .org /10.32620/act.2020.6.07] were used to increase the hardness of titanium materials.
In this work, the main attention is paid to the study of the dependence of the microstructure on laser exposure during the formation of structures of different sizes. The results obtained establish a correlation between the laser parameters and the resulting microstructure, which makes it possible to optimize and control its characteristics.
This study reveals aspects of the dependence of the microstructure on laser exposure during the formation of structures of different scales. The relationships found between laser parameters and microstructural characteristics make it possible to optimize and control the desired microstructural features. Thus, the results are expected to be applied to industry, helping to improve production efficiency, create materials with individual properties and develop innovative products.
This research was supported by Priority 2030 Federal Academic Leadership Program. The authors also express their gratitude to the Faculty of Physics and Technology at ITMO University for supporting students' scientific and research projects.
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[2] M. Jamesh, S. Kumar, T.S.N. Sankara Narayanan, Effect of Thermal Oxidation on Corrosion Resistance of Commercially Pure Titanium in Acid Medium. J. of Materi Eng and Perform 21, 900-906 (2012).
[3] H. Zhao, C. Zhao, W. Xie et al, Research Progress of Laser Cladding on the Surface of Titanium and Its Alloys. Materials.16 (8), 3250, (2023).
