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EFFECT OF LASER SURFACE REMELTING OF 304 STAINLESS STEEL

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Abstract

To study the effect of laser surface remelting (LSR) on the organization and properties of a 304 stainless steel surface layer, the microscopic morphology, hardness, roughness, adhesion, and corrosion resistance of the remelted layer (RL) are examined by changing the laser scanning speed (LSS). The experimental results show that the LSR technique hardens the 304 stainless steel substrate surface with a substrate hardness of 185 HV, and the maximum hardness after remelting is 248.9 HV. With an increase in the LSS, the surface roughness gradually decreases, while the bonding force first increases and then decreases, with the maximum bonding force being 26.1 N. At the LSS of 20 mm/s, the phase distribution in the RL is more uniform. The maximum self-corrosion potential of the RL reaches −0.718 V, and the self-corrosion current density is 3.872 A/cm2. The surface properties of 304 stainless steel are improved by using LSR.

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Authors and Affiliations

  1. School of Mechanical Engineering, Hefei University of Technology, 230009, Hefei, Anhui, China

    Yu. Chen, X. Li, J. Liu & Y. Zhang

  2. School of Mechanical and Electrical Engineering, Anhui Jianzhu University, 230601, Hefei, Anhui, China

    X. Chen

Authors
  1. Yu. Chen
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  2. X. Li
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  3. J. Liu
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  4. Y. Zhang
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  5. X. Chen
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Correspondence to Yu. Chen.

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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2023, Vol. 64, No. 3, pp. 152-160. https://doi.org/10.15372/PMTF20230315.

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Chen, Y., Li, X., Liu, J. et al. EFFECT OF LASER SURFACE REMELTING OF 304 STAINLESS STEEL. J Appl Mech Tech Phy 64, 491–498 (2023). https://doi.org/10.1134/S002189442303015X

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  • DOI: https://doi.org/10.1134/S002189442303015X

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