Features of Additive Laser Processing for the Surface Layer Hardness Increase on Titanium Samples

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Abstract

This article presents the research results on the control of the mechanical and functional titanium parameters by an additive surface laser micro-treatment with an additional graphite layer under the influence of near-IR laser radiation. The results of experimental studies on selection of the optimal laser radiation parameters for increasing the hardness and wear resistance of a model titanium sample are provided. The results demonstrate significantly increased hardness of the treated area (up to 9.3 times) and a decreased abrasive wear resistance rate by about 2 times compared to the original sample.

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About the authors

X. A. Egorova

ITMO University

Author for correspondence.
Email: photonics@technosphera.ru
ORCID iD: 0000-0002-4228-0392

PhD Student, Research Engineer, Institute of Laser Technologies

Russian Federation, Saint Petersburg

K. A. Rozanov

ITMO University

Email: photonics@technosphera.ru

Student, Institute of Laser Technologies

Russian Federation, Saint Petersburg

A. I. Kiian

INSCIENCE

Email: photonics@technosphera.ru

Engineer

Russian Federation, Saint Petersburg

D. A. Sinev

ITMO University

Email: photonics@technosphera.ru

Candidate of Technical Sciences, Assistant, Institute of Laser Technologies

Russian Federation, Saint Petersburg

References

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2. Fig. 1. Experimentation: a) A visual diagram of the processing, and the dependence of the hardness value on the pretreatment parameters during structuring with a power of 10 W (b) and 20 W(c). The solid line is the hardness value of the original titanium sample (210 MPa [1]), the dotted line is the hardness values of the oxide layers formed the pretreatment parameters specified in [11]

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3. Fig. 2. Diagrams of the dependence of the Vickers hardness of structured samples on the parameters of laser treatment with graphite powder with a different number of treatments

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4. Fig. 3. Results of contact profilometry of group tests carried out in an air environment with a load of 5.0 N, a sample rotation speed of 60 rpm, a counterbody rotation speed of 600 rpm and an exposure time of 60 s

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Copyright (c) 2023 Egorova X.A., Rozanov K.A., Kiian A.I., Sinev D.A.

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