Laser Surface Modification: Advances and Applications

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Guest Editor
Department of Materials Science and Engineering, EEBE, Universitat Politècnica de Catalunya, UPC, C/Eduard Maristany, 16, 08019 Barcelona, Spain
Interests: laser surface modification; fatigue; mechanical properties; metallurgical behavior; micromechanical properties; nanotechnology; phase transformation; stainless steels
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Special Issue Information

Dear Colleagues,

Laser surface modification has emerged as a transformative technology in modern manufacturing and materials processing. By utilizing the precision and energy efficiency of laser systems, significant advancements have been achieved in surface hardening, texturing, alloying, and coatings. These modifications enable enhanced material properties such as wear resistance, corrosion resistance, and esthetic finishes, aligning with the evolving demands of high-performance applications across aerospace, automotive, medical, and energy industries.

This Special Issue invites high-quality original research articles and comprehensive review papers focusing on recent developments, novel methodologies, and industrial applications in laser surface modification. Topics of interest include but are not limited to the following:

  • Laser-induced surface texturing for functional enhancements;
  • Innovations in laser cladding and alloying;
  • Advanced characterization techniques for modified surfaces;
  • Theoretical and computational modeling in laser–material interactions;
  • Applications in additive manufacturing and repair processes;
  • Environmental and sustainability aspects of laser-based technologies.

We encourage contributions that bridge the gap between academic research and industrial practice. Join us in exploring the future of laser surface modification technologies.

Dr. Mohammad Rezayat
Guest Editor

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Keywords

  • laser surface modification
  • surface texturing
  • laser cladding
  • advanced coatings
  • additive manufacturing
  • wear and corrosion resistance

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Published Papers (1 paper)

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Research

16 pages, 4905 KiB  
Article
Characteristics of Laser-Remelted Al–Ca–Cu–Mn (Zr) Alloys as a New Material for Additive Manufacturing
by Nikolay V. Letyagin, Torgom K. Akopyan, Pavel A. Palkin, Stanislav O. Cherkasov, Anastasiya S. Fortuna, Alexandr B. Lyukhter and Ruslan Yu. Barkov
J. Manuf. Mater. Process. 2025, 9(7), 242; https://doi.org/10.3390/jmmp9070242 - 17 Jul 2025
Abstract
In this study, prospects of designing new Al–Ca–Cu–Mn (Zr) alloys for additive manufacturing (AM) were evaluated for the example of laser remelting of thin-sheet rolled products. The new as-cast alloys have a hypereutectic structure containing Al27Ca3Cu7 primary crystals [...] Read more.
In this study, prospects of designing new Al–Ca–Cu–Mn (Zr) alloys for additive manufacturing (AM) were evaluated for the example of laser remelting of thin-sheet rolled products. The new as-cast alloys have a hypereutectic structure containing Al27Ca3Cu7 primary crystals and ultrafine eutectic particles of (Al,Cu)4Ca and Al27Ca3Cu7 phases in equilibrium with the aluminum solid solution. The solid solutions are additionally strengthened by alloying with Mn and micro additions of Zr, which contribute to the formation of coarsening-resistant phases without compromising the manufacturability of the alloys. Laser remelting, which simulates AM-typical solidification conditions, promotes the formation of a pseudoeutectic cellular structure without the occurrence of undesirable primary Al27Ca3Cu7. The size of the dendritic cells and eutectic particles is 10 times smaller (for solidification rates of ~200 K/s) than that of the as-cast state. This structure provides for a higher hardness of the laser-remelted alloy (96 HV) as compared to the as-cast alloy (85 HV). Data for the alloy after 350–400 °C long-term annealing for up to 100 h show that the hardness of the Al–Ca–Cu–Mn–Zr alloys declines relatively slowly by ~7.5% as compared to the Zr-free alloy, whose hardness decreases by ~22%. Thus, one can consider these alloys as a promising candidate for AM processes that require high thermal stability. Full article
(This article belongs to the Special Issue Laser Surface Modification: Advances and Applications)
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