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Metals
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Advanced Metal Welding and Joining Technologies—3rd Edition
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Advanced Metal Welding and Joining Technologies—3rd Edition

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

Deadline for manuscript submissions: 20 January 2027 | Viewed by 2013

Special Issue Editor

Dr. Yu Zhang

E-Mail Website
Guest Editor
Institute of Light Alloy and Processing, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
Interests: welding metallurgy; light metals; resistance spot welding
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Welding and joining is the key assembling process in modern industry. The application of next-generation structural materials demands novel welding and joining technologies to yield high-quality products. Across this trend, the fundamental research involved not only the evolution of material properties during processing, but also the development of suitable equipment and necessary methods. This Special Issue is focused on advanced metal welding and joining technologies, of which the concerned topics include the following: (1) advanced metals that trigger demands for specific processing techniques; (2) fundamental research on the issue of material evolution during processing; (3) the service performance of the advanced metal joints; and (4) novel welding and joining devices and methods. Furthermore, any research which is related to metal processing technology will also be considered.

Dr. Yu Zhang
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 250 words) can be sent to the Editorial Office for assessment.

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

  • welding metallurgy
  • light metals
  • high-entropy alloy
  • bulk metallic glass
  • mechanical property
  • corrosion
  • hybrid joining technique
  • dissimilar metal joining

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Published Papers (2 papers)

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Research

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14 pages, 2841 KB  
Article
Machine Learning-Assisted Fabrication for K417G Alloy Prepared by Wide-Gap Brazing: Process Parameters, Microstructure, and Properties
by Zhun Cheng, Min Wu, Bo Wei, Xinhua Wang, Xiaoqiang Li and Jiafeng Fan
Metals 2026, 16(2), 138; https://doi.org/10.3390/met16020138 - 23 Jan 2026
Viewed by 522
Abstract
This study employed data-driven machine learning models to analyze the effects of filler material composition and other process parameters on mechanical properties during the crack repair of nickel-based superalloys such as K417G using wide-gap brazing technology. First, a linear regression model was used [...] Read more.
This study employed data-driven machine learning models to analyze the effects of filler material composition and other process parameters on mechanical properties during the crack repair of nickel-based superalloys such as K417G using wide-gap brazing technology. First, a linear regression model was used to analyze the influence of independent variables (filler material composition and other process parameters) on the dependent variables (tensile strength and elongation). The regression results indicated that temperature and filler composition significantly affected tensile strength and elongation. Subsequently, a TabNet machine learning model was applied to simulate the relationship between parameters such as composition and mechanical properties. The experimental results showed that when four parameters, namely, the filler composition, temperature, holding time, and pressure, were used as input features, the deviation between the actual and predicted values of elongation was minimal, with a value of only 1.5650. Full article
(This article belongs to the Special Issue Advanced Metal Welding and Joining Technologies—3rd Edition)
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Review

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19 pages, 1890 KB  
Review
A Review of Directed Energy Deposition for Wear-Resistant Metal–Ceramic Coatings in High-Temperature Industrial Applications
by Won-Ik Cho and Cheolho Park
Metals 2026, 16(4), 403; https://doi.org/10.3390/met16040403 - 5 Apr 2026
Cited by 1 | Viewed by 1014
Abstract
This review provides a comprehensive overview of high-wear-resistant metal–ceramic surface engineering technologies based on Directed Energy Deposition (DED) for high-temperature industrial applications. In high-temperature processes such as continuous hot-dip coating, critical components (e.g., rollers and sleeves) are exposed to severe wear and chemical [...] Read more.
This review provides a comprehensive overview of high-wear-resistant metal–ceramic surface engineering technologies based on Directed Energy Deposition (DED) for high-temperature industrial applications. In high-temperature processes such as continuous hot-dip coating, critical components (e.g., rollers and sleeves) are exposed to severe wear and chemical reactions, leading to rapid degradation and frequent replacement, which results in significant economic losses. This review focuses on the fundamental characteristics of DED processes and their advantages over conventional surface modification techniques such as HVOF, PVD/CVD, and arc-based methods. Particular attention is given to the process–structure–property relationships governing coating performance, including coating thickness, bonding characteristics, and high-temperature stability. Representative material systems, particularly WC-based metal–ceramic composites (e.g., Co–WC), are systematically discussed in terms of their wear resistance and applicability under severe operating conditions. Quantitative tribological performance metrics, including wear rate and friction coefficient, are also reviewed to provide a more rigorous understanding of coating performance. The analysis highlights that DED offers unique advantages in achieving thick coatings with strong metallurgical bonding and high applicability to repair and remanufacturing of large-scale components. In addition, recent advances in DED technologies, such as closed-loop control, self-regulating effects, and data-driven process optimization, are examined to highlight emerging trends in the field. The review also identifies current technical limitations and outlines future research directions, emphasizing the need for improved process control, defect mitigation, and integration of advanced monitoring techniques. Full article
(This article belongs to the Special Issue Advanced Metal Welding and Joining Technologies—3rd Edition)
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