Renovation of Parts to Save Metals (Volume 2)

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 20 October 2024 | Viewed by 1217

Special Issue Editors


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Guest Editor
Associate Professor, Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Interests: surface integrity; thermal spraying; hard surfacing; corrosion; joining of materials; tribology
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Interests: welding; surface treatment; heat treatment; surface quality assessment
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Interests: welding; weld cladding; hard surfacing; materials design; materials science; brazing; non-destructive testing; weldability
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

New challenges have recently arisen in the field of R&D, whose aim is to transform the industry toward the efficient use of existing resources and raw materials. The scope of engineering activities is shifting from the design of new machine parts to renovation technologies to use alternative renovation processes. Degradation processes, which are a natural guide to the operational life of components, manifest primarily through the deterioration of conditions in the surface layers of the component. Material losses, deterioration of roughness, and undesired changes in the structure of the surface layers lead to decommissioning of the component. The basic task of renovation technologies is to restore the geometric shape and dimensions of the functional surfaces of the components, as well as to increase the wear resistance of surfaces and extend the service life of renovated components. In practice, to increase the quality and service life of the renovated components, a renovation layer of a higher quality than that of the base material (better sliding properties, increased corrosion resistance, etc.) must be chosen. In the case of renovation of worn parts, it is first necessary to correctly analyze the type of wear, the impact of the environment, working conditions, and based on this analysis, to choose a suitable renovation technology. The creation of new layers gives the possibility to change the properties of the surface and adapt it to the operating conditions, or to give the surface completely new properties and thus give the product a new added value.

The aim of the Special Issue is to provide space for researchers to present the latest research results in the field of the use of advanced technologies in the renovation of functional surfaces using new additional materials and coatings. The Special Issue provides space to present a wide range of methods for evaluating mechanical, tribological and corrosive properties in order to determine the quality of renovation layers and coatings.

Dr. Anna Guzanová
Prof. Dr. Janette Brezinová
Prof. Dr. Ján Viňáš
Guest Editors

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

  • renovation
  • hardfacing
  • thermal spraying
  • additive manufacturing
  • direct energy deposition
  • corrosion resistance
  • tribology
  • new filler materials
  • thin film deposition
  • simulation of renovation processes

Published Papers (1 paper)

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Research

19 pages, 61627 KiB  
Article
Determination of the Effect of Heat Input during Laser Welding on the Magnitude of Residual Stresses in the Refurbishment of Al Alloy Casting
by Ján Viňáš, Janette Brezinová, Miroslav Pástor, Patrik Šarga, Miroslav Džupon and Jakub Brezina
Metals 2023, 13(12), 2003; https://doi.org/10.3390/met13122003 - 13 Dec 2023
Cited by 2 | Viewed by 888
Abstract
The paper presents the results of research on the evaluation of the quality of coating layers made by a laser. The base material, which was Dievar steel (1.2343), was coated with a single layer using additional materials in the form of a wire [...] Read more.
The paper presents the results of research on the evaluation of the quality of coating layers made by a laser. The base material, which was Dievar steel (1.2343), was coated with a single layer using additional materials in the form of a wire with a diameter of ø 1.0 mm. As additional material, wires with chemistry corresponding to steels 1.2343 and 1.6356 were used. The primary objective was to verify the possibilities of innovative use of additive materials based on maraging steels, which were chosen from the production of two manufacturers with slightly different chemical compositions. The experiment verified the influence of the cladding parameters on the residual stress values around the fabricated maraging layers. Metallographic analysis by light microscopy was carried out in order to identify the individual structures as well as to assess the occurrence of internal defects in the coatings. The effect of the mixing of the coating metal with the base material was also assessed by means of a low-load hardness assessment, which was carried out in accordance with EN ISO 4063-2. Based on the results, it can be concluded that, in terms of residual stresses, the measured values were approximately the same for all the additive materials used; however, due to the desired mechanical properties of the additively formed layers, it is possible to recommend additive materials based on medium- and high-alloy steels for additive manufacturing. Full article
(This article belongs to the Special Issue Renovation of Parts to Save Metals (Volume 2))
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