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Metals
Special Issues
Laser Treatment of Metals and Alloys
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Laser Treatment of Metals and Alloys

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Additive Manufacturing".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 10579

Special Issue Editor

Prof. Dr. Serguei P. Murzin

E-Mail Website
Guest Editor
Samara National Research University, Moskovskoe Shosse 34 Samara, Russia
Interests: laser processing; material properties; structure formation; beam shaping; optical systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Laser treatment methods based on electrophysical, electrochemical, and physicochemical effects solve a wide range of problems associated with processing various materials with laser radiation in order to change their geometric parameters or improve physical properties. At present, laser processing technologies for materials (particularly metals and alloys) have achieved significant development, occupy a considerable place both in industry and in scientific research, and their scope is constantly expanding. The effect of a laser beam on metallic materials is described by general provisions that are associated with the absorption and reflection of radiation, the propagation of absorbed energy, etc. A number of specific features are also taken into account.

The purpose of this Special Issue is to combine the top knowledge in the area of laser–material interaction, providing an opportunity for sharing new ideas and discovering solutions. This Special Issue discusses the newest research on the possibilities of laser and laser-assisted macro-, micro-, and nanotechnologies, forming the required complex of structures and properties of metals and alloys. Scientific articles based on experimental, numerical, and theoretical studies addressing innovative applications are welcome. Original research papers and review articles on the development and application of optical systems for the laser processing of metallic materials are also welcome.

Prof. Dr. Serguei P. Murzin
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • laser material processing
  • metals and alloys
  • laser treatment methods
  • innovative applications
  • laser and laser-assisted
  • structuring and modification
  • structure formation
  • improvement of properties
  • laser beam shaping
  • optical systems

Published Papers (3 papers)

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Research

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11 pages, 3690 KiB  
Article
Laser Welding of Metal-Polymer-Metal Sandwich Panels
by Serguei P. Murzin, Heinz Palkowski, Alexey A. Melnikov and Maksim V. Blokhin
Metals 2022, 12(2), 256; https://doi.org/10.3390/met12020256 - 29 Jan 2022
Cited by 11 | Viewed by 3223
Abstract
In the production of metal-polymer multilayer composite parts, e.g., for automotive applications, the possibilities of thermal joining are limited due to the instability of the polymer core at elevated temperatures. Accordingly, such materials require a special approach to their welding. The three-layered metal-polymer-metal [...] Read more.
In the production of metal-polymer multilayer composite parts, e.g., for automotive applications, the possibilities of thermal joining are limited due to the instability of the polymer core at elevated temperatures. Accordingly, such materials require a special approach to their welding. The three-layered metal-polymer-metal samples were made of DPK 30/50+ZE dual-phase steel as cover sheets that were electrolytic galvanized, and a polypropylene-polyethylene foil as core material, with thicknesses of 0.48/0.3/0.48 mm. The samples were welded on both sides using a 1.06 µm Nd:YAG ROFIN StarWeld Manual Performance laser. Significant improvements of the welding conditions are achieved by machining the edges of materials to be welded. The parameters of laser welding were chosen in such a way that the polymer structure remained almost unchanged. The weld thickness was about 40% of the thickness of each steel layer. It was established that within the selected laser processing parameters the melting occurred uniformly, while the polymer layer practically did not change its structure. Therefore, it can be stated that two-sided joint welding of metal-polymer-metal composite sandwich panels, without significant degradation of the polymer core layer, is feasible. Full article
(This article belongs to the Special Issue Laser Treatment of Metals and Alloys)
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Review

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26 pages, 5947 KiB  
Review
Laser Irradiation for Enhancing Mass Transfer in the Solid Phase of Metallic Materials
by Serguei P. Murzin
Metals 2021, 11(9), 1359; https://doi.org/10.3390/met11091359 - 30 Aug 2021
Cited by 12 | Viewed by 2039
Abstract
Possibilities of using laser irradiation to enhance mass transfer in the solid phase of metallic materials in order to form structures with improved physical and mechanical properties were reviewed. The features of the diffusion mass transfer in metals and alloys under shock exposure [...] Read more.
Possibilities of using laser irradiation to enhance mass transfer in the solid phase of metallic materials in order to form structures with improved physical and mechanical properties were reviewed. The features of the diffusion mass transfer in metals and alloys under shock exposure were specified. In this case, the rate of diffusion processes of mass transfer can be significantly increased. The conditions for intensification of mass transfer in metallic materials by pulse-periodic laser irradiation were determined and the synthesis of nanoporous and composite oxide nanomaterials was described. A significant increase of the diffusion coefficient in a metallic material, in comparison to plain exposure to laser beam heating, was identified. It could be attributed to the synergy of heat exposure and laser-induced vibrations, mainly in the range of sound frequencies, as a result of a pulse-periodic laser irradiation. The condition for intensifying mass transfer in the solid phase of selectively oxidable metallic materials was identified as a non-stationary stress-strain state caused by laser-induced sound waves. The exploitation of this synergy effect permitted the implementation of a novel approach for the creation of structures of nanomaterials. At the same time, a targeted influence on mass transfer and the accompanying relaxation processes make it possible to achieve an increase in the efficiency of methods for processing metals and alloys. Full article
(This article belongs to the Special Issue Laser Treatment of Metals and Alloys)
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21 pages, 5142 KiB  
Review
Analysis of the Advantages of Laser Processing of Aerospace Materials Using Diffractive Optics
by Serguei P. Murzin, Nikolay L. Kazanskiy and Christian Stiglbrunner
Metals 2021, 11(6), 963; https://doi.org/10.3390/met11060963 - 15 Jun 2021
Cited by 27 | Viewed by 4172
Abstract
We considered possibilities of an application of diffractive free-form optics in laser processing of metallic materials in aerospace production. Based on the solution of the inverse problem of heat conduction, an algorithm was developed that calculates the spatial distribution of the power density [...] Read more.
We considered possibilities of an application of diffractive free-form optics in laser processing of metallic materials in aerospace production. Based on the solution of the inverse problem of heat conduction, an algorithm was developed that calculates the spatial distribution of the power density of laser irradiation in order to create the required thermal effect in materials. It was found that the use of diffractive optics for the laser beam shaping made it possible to obtain specified properties of processed materials. Laser thermal hardening of parts made of chrome–nickel–molybdenum steel was performed. This allowed us to increase the wear resistance due to the creation in the surface layer of a structure that has an increased hardness. In addition, a method of laser annealing of sheet materials from aluminum–magnesium alloy and low-alloy titanium alloys was developed. Application of this method has opened opportunities for expanding the forming options of these materials and for improving the precision in the manufacturing of aircraft engine parts. It was also shown that welding by a pulsed laser beam with a redistribution of power and energy density makes it possible to increase the strength of the welded joint of a heat-resistant nickel-based superalloy. Increasing the adhesion strength of gas turbine engine parts became possible by laser treatment using diffractive free-form optics. Full article
(This article belongs to the Special Issue Laser Treatment of Metals and Alloys)
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