Laser Scanning Speed Influences on Assessment of Laser Remelted Commercially Pure Titanium Grade 2

Document Type : Original Article


Department of Production Engineering and Metallurgy, University of Technology, Baghdad, Iraq


In this research, the influences of laser surface remelting using different scanning speeds on the microstructure, roughness, and hardness of Commercial pure Titanium (Grade 2) were investigated. High power Nd: YAG pulsed laser was used. The laser scanning speeds used in this study were 4, 6, 8, and 10 mm/s and the other laser parameters (power, pulse frequency, beam diameter) were constant. The corrosion performance of the laser surface remelted and Cp titanium was then evaluated by potential dynamic measurements in a 3.5% NaCl solution. The results revealed that due to the diffusionless transformation after laser surface treatment and the formation of the martensite phase, the surface post-laser treatment was significantly different from those before the treatment. The results were indicated using an optical microscope, FE-SEM, XRD, AFM, and microhardness analysis. It was found the lowest scanning speed, 4 mm/s, had the slightest roughness and the smallest average grain size (26.06 nm) due to the high input energy and slow cooling rate, while the highest scanning speed (10 mm/s) had the greatest microhardness (291.5 Hv) due to the short interaction time between the substrate surface and laser beam and the higher cooling rate. The results also demonstrated the obvious improvement in the pitting resistance of Cp Ti in harsh environments as a result of the influence of laser remelting.

Graphical Abstract

Laser Scanning Speed Influences on Assessment of Laser Remelted Commercially Pure Titanium Grade 2


Main Subjects

  1. Poulon-Quintin A, Watanabe I, Watanabe E, Bertrand C. Microstructure and mechanical properties of surface treated cast titanium with Nd: YAG laser. Dental Materials. 2012;28(9):945-51.
  2. Syaripuddin S, Sopiyan, S., Aditya, S., Yudanto, S. D., and Susetyo, F. B. . Synthesis of Hard Layer by Titanium Addition During Welding Process and Quenched Directly. International Journal of Engineering, IJETransactions C: Aspects. 2023;36(3): 532–9.
  3. Tekle Abegaz S. We are IntechOpen, the world’s leading publisher of Open Access books Built by scientists, for scientists. 2021.
  4. Abaei M, Rahimipour MR, Farvizi M, Eshraghi MJ. Microstructure and Corrosion Behavior of Al-Cu-Fe Quasi-crystalline Coated Ti-6Al-4V Alloy. International Journal of Engineering, Transactions A: Basics. 2023;36(10):1880-91.
  5. Prando D, Brenna A, Diamanti MV, Beretta S, Bolzoni F, Ormellese M, et al. Corrosion of titanium: Part 1: Aggressive environments and main forms of degradation. Journal of applied biomaterials & functional materials. 2017;15(4):e291-e302.
  6. Jaquez-Muñoz J, Gaona-Tiburcio C, Lira-Martinez A, Zambrano-Robledo P, Maldonado-Bandala E, Samaniego-Gamez O, et al. Susceptibility to pitting corrosion of Ti-CP2, Ti-6Al-2Sn-4Zr-2Mo, and Ti-6Al-4V alloys for aeronautical applications. Metals. 2021;11(7):1002.
  7. Seo B, Park H-K, Park C-S, Park K. Role of Ta in improving corrosion resistance of titanium alloys under highly reducing condition. Journal of Materials Research and Technology. 2023;23:4955-64.
  8. Matthews A, Artley R, Holiday P. 2005 Revisited-the UK Surface Engineering Industry to 2010: An Update of the'UK Engineering Coatings Industry in 2005'Report: National Surface Engineering Centre, NASURF; 1998.
  9. Merche D, Vandencasteele N, Reniers F. Atmospheric plasmas for thin film deposition: A critical review. Thin Solid Films. 2012;520(13):4219-36.
  10. Duley WW. Laser processing and analysis of materials: Springer Science & Business Media; 2012.
  11. Sasikumar Y, Indira K, Rajendran N. Surface modification methods for titanium and its alloys and their corrosion behavior in biological environment: a review. Journal of Bio-and Tribo-Corrosion. 2019;5:1-25.
  12. Manna I, Majumdar JD, Chandra BR, Nayak S, Dahotre NB. Laser surface cladding of Fe–B–C, Fe–B–Si and Fe–BC–Si–Al–C on plain carbon steel. Surface and Coatings Technology. 2006;201(1-2):434-40.
  13. Bi G, Chen S, Jiang J, Li Y, Chen T, Chen X-B, et al. Effects of Laser Surface Remelting on Microstructure and Corrosion Properties of Mg-12Dy-1.1 Ni Alloy. Journal of Materials Engineering and Performance. 2023;32(6):2587-97.
  14. Merino RI, Laguna-Bercero MA, Lahoz R, Larrea Á, Oliete PB, Orera A, et al. Laser processing of ceramic materials for electrochemical and high temperature energy applications. boletín de la sociedad española de cerámica y vidrio. 2022;61:S19-S39.
  15. Sun Z, Annergren I, Pan D, Mai T. Effect of laser surface remelting on the corrosion behavior of commercially pure titanium sheet. Materials Science and Engineering: A. 2003;345(1-2):293-300.
  16. Bahloula A, Sahourb M, Oumeddoura R, Pillonc G. Structural characterization and surface modification of titanium plates after Nd: YAG laser treatment. Portugaliae Electrochimica Acta. 2020;38(4):215-28.
  17. B265-11 A, editor Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate2011: American Society for Testing Materials.
  18. Lütjering G, Williams J, Gysler A. Microstructure and mechanical properties of titanium alloys. Microstructure And Properties Of Materials: (Volume 2)2000. p. 1-77.
  19. Asalzadeh S, Yasserian K. The Effect of Various Annealing Cooling Rates on Electrical and Morphological Properties of TiO 2 Thin Films. Semiconductors. 2019;53:1603-7.
  20. Mahamood RM, Akinlabi ET, Akinlabi S. Laser power and scanning speed influence on the mechanical property of laser metal deposited titanium-alloy. Lasers in Manufacturing and Materials Processing. 2015;2:43-55.
  21. Khosroshahi M, Tavakoli J, Mahmoodi M. Characterization of Nd: YAG laser radiation effects on Ti6Al4V physico-chemical properties: an in vivo study. International Journal of Engineering. 2007;20(1):1-11.