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Laser Surface Treatment Processes, Heat Treatment on Metallic Alloys
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Laser Surface Treatment Processes, Heat Treatment on Metallic Alloys

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3873

Special Issue Editor

Prof. Dr. Mirosław Bonek

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland
Interests: metallic alloys; tool materials; biomaterials; heat treatment; laser surface engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

The functional properties of many products and their parts depend not only on the capability to transmit mechanical loads through the entire active section of a part made of the material applied, which is often heat-treated, or on its physiochemical properties, but often also, or mainly, on the structure and properties of surface layers. Society benefits from the use of improved products that use these new material technologies. In the twenty-first century, a new generation of materials promises to again reshape our world and solve some of the planet’s most pressing problems. Progress in practical application has been determined by intensive research and development works on advanced metallic alloys.

This Special Issue will include original scientific papers which describe new engineering materials and technological processes of the manufacturing, processing, and formation of their structure and properties in the whole volume and their surface, as well as the description of phenomena and phase transformations appearing in those materials. It will encourage the submission of new fundamental and interdisciplinary contributions on materials science and engineering, surface engineering, and general advances in material technologies.

This Special Issue will focus on the important effects of these special laser surface treatment processes and heat treatment on the evolution of the structure–property correlations of some selected metallic alloys, especially technologically advanced ones.

Prof. Dr. Mirosław Bonek
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. Materials is an international peer-reviewed open access semimonthly 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

  • metallic alloys
  • manufacturing
  • heat treatment, laser surface engineering
  • research method
  • mechanical properties
  • structure–property correlations
  • advanced materials characterization

Published Papers (2 papers)

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Research

18 pages, 11094 KiB  
Article
Microstructures and Properties of NbC-Reinforced Ni-Based Coatings Synthesized In Situ by Ultrasonic Vibration-Assisted Laser Cladding
by Guofu Lian, Kun Yue, Jiayi Zeng, Meiyan Feng, Ruqing Lan and Linghua Kong
Materials 2023, 16(4), 1704; https://doi.org/10.3390/ma16041704 - 17 Feb 2023
Cited by 4 | Viewed by 1268
Abstract
This paper aims to explore the mechanism of an ultrasonic applied field on the microstructures and properties of coatings, and clarify the evolution of the molten pool under different ultrasonic frequencies. The Taguchi experimental design method was adopted in this paper. NbC-reinforced Ni-based [...] Read more.
This paper aims to explore the mechanism of an ultrasonic applied field on the microstructures and properties of coatings, and clarify the evolution of the molten pool under different ultrasonic frequencies. The Taguchi experimental design method was adopted in this paper. NbC-reinforced Ni-based coatings were in situ synthesized by laser cladding to investigate the effects of ultrasonic vibration process parameters on the microstructure, pore area, microhardness, and wear resistance of the cladding layer. The results show that the pore area decreases first and then increases as ultrasonic power increases from 600 to 900 W and ultrasonic frequency from 23 to 40 kHz. On the contrary, the hardness and wear resistance increase at first and then decrease. The pore area is minimized at 800 W ultrasonic power and 32 kHz ultrasonic frequency, and the hardness is maximized at 600 W ultrasonic power and 40 kHz ultrasonic frequency. Meanwhile, the highest wear resistance can be obtained when ultrasonic power is 700 W and ultrasonic frequency is 32 kHz. Based on the phase structure analysis, the cladding layer mainly consists of FeNi3, NbC, B4C, and CrB2. Ultrasonic vibration will not change the phase composition of the layer. Combined with the varying G/R value and cooling rate, the reasons for the change in grain morphology in different areas were analyzed to reveal the evolution mechanism of the molten pool under the influence of ultrasound. Full article
(This article belongs to the Special Issue Laser Surface Treatment Processes, Heat Treatment on Metallic Alloys)
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18 pages, 22844 KiB  
Article
Investigation of the Implementation of Laser Surface Alloying of Cu with Cr–WC
by Justyna Domagała-Dubiel, Katarzyna Bilewska, Mirosława Pawlyta, Joanna Kulasa and Damian Janicki
Materials 2022, 15(15), 5396; https://doi.org/10.3390/ma15155396 - 5 Aug 2022
Viewed by 1415
Abstract
This paper presents research on the microstructure and mechanical properties of an alloyed composite copper (Cu) surface layer, reinforced with a mixture of chromium–tungsten carbide (Cr–WC) powders. Copper alloying was performed using a high-power diode laser (HPDL). In the tests, three mixtures of [...] Read more.
This paper presents research on the microstructure and mechanical properties of an alloyed composite copper (Cu) surface layer, reinforced with a mixture of chromium–tungsten carbide (Cr–WC) powders. Copper alloying was performed using a high-power diode laser (HPDL). In the tests, three mixtures of powders with different percentage contents (75%Cr 25%WC, 50%Cr 50%WC, 25%Cr 75%WC) were injected into the melting pool during the laser surface alloying process. Microstructural evolution and the properties of the surface layer of copper after laser alloying were investigated. Structural investigations were performed using light microscopy, scanning and transmission electron microscopy (SEM, TEM) and X-ray diffraction (XRD). Microhardness and wear resistance of the modified surface layer were examined as well. After laser treatment the applied powders appear as uniformly distributed particles in the alloyed zone as well as nanoscale precipitates in the Cu matrix. Several types of precipitate characteristics, in terms of morphology, structure and chemical composition, were observed. Laser alloying of the surface layer modified the microstructure, which resulted in an increase in the hardness of the surface layers compared to the base material. Full article
(This article belongs to the Special Issue Laser Surface Treatment Processes, Heat Treatment on Metallic Alloys)
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