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Emerging Trends in Welding Technologies

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 July 2026 | Viewed by 1493

Editors


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Guest Editor
CENIMAT/I3N, Department of Materials Science, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
Interests: additive manufacturing; welding; materials processing; advanced characterization techniques; mechanical behavior; shape memory alloys and high-entropy alloys
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Special Issue Information

Dear Colleagues,

Welding and joining technologies play a critical role in enabling the application of advanced engineering alloys in multiple industries across the world. A key area of focus is welding metallurgy, where microstructural transformations induced by these processes can significantly influence the mechanical performance of joints. Therefore, understanding and correlating process parameters with their impact on the microstructure and mechanical behavior is essential for optimizing joint quality and performance. Moreover, simulation and modeling of thermomechanical behavior during welding are also essential for refining process parameters and improving reliability, particularly regarding the prediction of microstructures driven by the imposed thermal cycles.

This Special Issue welcomes original research and review articles that address the latest advancements in welding and joining. Topics of interest include, but are not limited to, the following:

  • Similar and dissimilar material joining;
  • Fusion and solid-state welding processes;
  • Modeling and simulation of welding behavior;
  • Process development and optimization;
  • Advanced microstructural and mechanical characterization.

We also encourage the submission of review papers and short communications that may contribute to the advancement of knowledge in welding and joining technologies.

Dr. João Lopes
Prof. Dr. João Pedro Oliveira
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 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-anonymized 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

  • fusion welding
  • solid-state welding
  • arc welding
  • laser welding
  • welding
  • joining
  • characterization
  • mechanical properties

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Published Papers (2 papers)

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Research

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13 pages, 3010 KB  
Article
Effect of Heat Treatments on the Corrosion Resistance of a TRIP Steel and Its Evaluation by Non-Destructive Testing
by Karla Ivette Vega-Nava, Ariosto Medina-Flores, Marco Antonio Espinosa-Medina, José Sergio Pacheco-Cedeño, Héctor Guillermo Carreón-Garcidueñas, Francisco Fernando Curiel-López and José Jaime Taha-Tijerina
Materials 2026, 19(13), 2728; https://doi.org/10.3390/ma19132728 (registering DOI) - 25 Jun 2026
Abstract
The development of advanced high-strength steels (AHSS) for the automotive industry requires optimizing the balance between mechanical properties and durability in aggressive environments. This study investigates the effects of two heat treatment routes on the microstructure and corrosion resistance of a transformation-induced plasticity [...] Read more.
The development of advanced high-strength steels (AHSS) for the automotive industry requires optimizing the balance between mechanical properties and durability in aggressive environments. This study investigates the effects of two heat treatment routes on the microstructure and corrosion resistance of a transformation-induced plasticity (TRIP) steel (Fe-0.2C-1.75Mn-0.5Si-1Al). Route A includes a full austenitizing step at 1000 °C prior to intercritical annealing, whereas Route B omits this step and begins directly with intercritical annealing at 800 °C. Microstructural characterization (SEM/XRD), electrochemical assays, and eddy current tests were employed. The results revealed that Route A yields a homogeneous microstructure with 12.7% retained austenite, higher than the 7.7% obtained with Route B. Electrochemically, the steel from Route A exhibited the greatest resistance, with the lowest corrosion current density (icorr) of 3.72 µA/cm2 and a more noble corrosion potential (Ecorr) of −743 mV compared to SCE. The improvement mechanism is that the homogeneity induced by complete austenitization minimizes the formation of internal galvanic cells between phases; likewise, the higher austenite fraction provides superior chemical stability, which favors denser passivation. Finally, Route A exhibited the lowest loss of electrical conductivity (16%), validating the use of eddy currents for monitoring the integrity of advanced steels. Full article
(This article belongs to the Special Issue Emerging Trends in Welding Technologies)
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Review

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14 pages, 2727 KB  
Review
Arc Welding Processes as Practical Solutions to Join Ceramics: Progress and Future Outlook
by J. G. Lopes, J. Shen and J. P. Oliveira
Materials 2025, 18(21), 4940; https://doi.org/10.3390/ma18214940 - 29 Oct 2025
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Abstract
Arc welding of ceramic materials remains a significantly underdeveloped research topic in materials science and manufacturing. This is primarily due to the difficulty in managing thermal gradients and stress concentrations during arc welding, which often result in cracking and poor joint reliability in [...] Read more.
Arc welding of ceramic materials remains a significantly underdeveloped research topic in materials science and manufacturing. This is primarily due to the difficulty in managing thermal gradients and stress concentrations during arc welding, which often result in cracking and poor joint reliability in ceramic components. However, recent advances suggest that gas tungsten arc welding and plasma arc welding could offer a promising pathway for ceramic joining if thoroughly investigated. While these techniques have proven effective in the precision welding of metals, their application to ceramics is met with several challenges, driven by the material’s inherent brittleness and high melting points. Consequently, further research is essential to understand the arc welding processes on ceramic materials and develop solutions to optimize and establish reliable welding procedures. Therefore, expanding this topic could have a significant impact on key engineering applications, where ceramic materials are increasingly in demand. Full article
(This article belongs to the Special Issue Emerging Trends in Welding Technologies)
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