Recent Advances in Welding Technology of Alloys and Metals

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Welding and Joining".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 383

Special Issue Editor


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Guest Editor
Łukasiewicz—Upper Silesian Institute of Technology, The Welding Centre, Bł. Czesława Str. 16–18, 44-100 Gliwice, Poland
Interests: electron beam welding; friction stir welding; friction stir processing; additive manufacturing; monitoring of the welding processes
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Special Issue Information

Dear Colleagues,

As competition in the market grows, the production of different structures, from the pacemaker to bridges, with given mechanical properties as well as user properties is an indispensable part of modern production systems. Proper welding technologies make it possible to reduce welding imperfections, improve mechanical properties, and fulfil requirements of standards and codes. Mostly, the welding processes can be carried out as the final processing step.

Welding as an “umbrella” term defines all those technological process variants that provide the proper quality of the welded joints. Arc welding, electron beam welding, laser beam welding, and laser hybrid welding can be recognized as joining processes which melt the materials. It should be noted that the welding technologies can be put into effect both very quickly and very precisely at the position desired in each case. The welding process can be applied in an SME as well as in large companies as needed.

In this Special Issue, we seek to provide a wide set of articles on various aspects of welding technologies. The idea is to demonstrate the broad range of properties and applications of these technologies. It is hoped that this open access Special Issue will provide a place for anyone to familiarize themselves with the current state of the art for these processes. Articles on technological process analyses, defect elimination, and the performance of final welded joints are desired, as well as those on the welding of modern materials.

Dr. Marek Weglowski
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

  • arc welding
  • laser beam welding
  • electron beam welding
  • laser hybrid welding
  • laser beam welding
  • cladding
  • physical and numerical simulation of welding processes
  • aerospace
  • automotive
  • modern consumable materials

Published Papers (1 paper)

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Research

18 pages, 7024 KiB  
Article
Effect of Pre-Weld Heat Treatment on the Microstructure and Properties of Coarse-Grained Heat-Affected Zone of a Wind Power Steel after Simulated Welding
by Zhixing Wang, Xuelin Wang and Chengjia Shang
Metals 2024, 14(5), 587; https://doi.org/10.3390/met14050587 - 17 May 2024
Viewed by 294
Abstract
The effect of pre-weld heat treatment on the microstructure and low-temperature impact toughness of the coarse-grained heat-affected zone (CGHAZ) after simulated welding was systematically investigated through the utilization of scanning electron microscopy (SEM) and electron back-scattering diffraction (EBSD). The Charpy impact test validated [...] Read more.
The effect of pre-weld heat treatment on the microstructure and low-temperature impact toughness of the coarse-grained heat-affected zone (CGHAZ) after simulated welding was systematically investigated through the utilization of scanning electron microscopy (SEM) and electron back-scattering diffraction (EBSD). The Charpy impact test validated the presence of an optimal pre-weld heat treatment condition, resulting in the highest impact toughness observed in the CGHAZ. Three temperatures for pre-weld heat treatment (690, 720 and 750 °C) were used to obtain three different matrices (Steel 1, Steel 2, Steel 3) for simulated welding. The optimal pre-weld heat treatment is 720 °C for 15 min followed by water quench. Microstructure characterization showed that there is an evident microstructure comprising bainite (B) in Steel 1 and Steel 2 after pre-weld heat treatment, while the addition of martensite (M) with the pre-weld heat treatment temperature exceeds Ac1 by almost 60 °C (Steel 3). These differences in microstructures obtained from pre-weld heat treatment influence the refinement of high-temperature austenite during subsequent simulated welding reheating processes, resulting in distinct microstructural characteristics in the CGHAZ. After the optimal pre-weld heat treatment, Steel 2 subjected to single-pass welding thermal simulation demonstrates a refined microstructure characterized by a high density of high-angle grain boundaries (HAGBs) within the CGHAZ, particularly evident in block boundaries. These boundaries effectively prevent the propagation of brittle cracks, thereby enhancing the impact toughness. Full article
(This article belongs to the Special Issue Recent Advances in Welding Technology of Alloys and Metals)
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