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Advances in Welding of Alloy and Composites (2nd Edition)

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

Deadline for manuscript submissions: 31 December 2025 | Viewed by 823

Special Issue Editors

College of Materials Science and Engineering, Chongqing University, Chongqing, China
Interests: microstructure; solidification; welding; casting; light-weight alloy; simulation; cellular automaton
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Guest Editor
College of Materials Science and Engineering, Chongqing University, Chongqing, China
Interests: magnesium alloy; welding; casting

Special Issue Information

Dear Colleagues,

Welding is a promising way of fabricating multi-material structures for achieving weight reduction and high functionalization. However, no welding method can be applied or used universally for different materials such as aluminum alloys, copper alloys, steel, etc. With the development of new materials such as metal matrix composites and high-entropy alloys, different welding methods have been developed and used besides conventional fusion welding, e.g., friction stir welding, ultrasonic spot welding, laser-arc hybrid welding, diffusion welding, and so on. It is difficult to obtain high-strength and defect-free welding joints for materials with various physical properties. Research has been concentrated on the welding characteristics of different alloys and composites, and the acquisition of high-strength welding joints will be the most important criterion for their wider applications. The goal of this Special Issue is to describe recent developments in this developing research field. Therefore, we invite you to submit manuscripts for this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Cheng Gu
Dr. Guoqiang You
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. 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

  • welding
  • alloy
  • composites
  • solidification
  • molten pool
  • metallurgical bonding
  • microstructure
  • fluid flow
  • welding joints

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Published Papers (1 paper)

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Research

17 pages, 5353 KB  
Article
Evaluation of Hardfacing Layers Applied by FCAW-S on S355MC Steel and Their Influence on Its Mechanical Properties
by Fineas Morariu, Timotei Morariu, Alexandru Bârsan, Sever-Gabriel Racz and Dan Dobrotă
Materials 2025, 18(15), 3664; https://doi.org/10.3390/ma18153664 - 4 Aug 2025
Viewed by 466
Abstract
Enhancing the wear resistance of structural steels used in demanding industrial applications is critical for extending components’ lifespan and ensuring mechanical reliability. In this study, we investigated the influence of flux-cored arc welding (FCAW) hardfacing on the tensile behavior of S355MC steel. Protective [...] Read more.
Enhancing the wear resistance of structural steels used in demanding industrial applications is critical for extending components’ lifespan and ensuring mechanical reliability. In this study, we investigated the influence of flux-cored arc welding (FCAW) hardfacing on the tensile behavior of S355MC steel. Protective Fe-Cr-C alloy layers were deposited in one and two successive passes using automated FCAW, followed by tensile testing of specimens oriented at varying angles relative to the weld bead direction. The methodology integrated 3D scanning and digital image correlation to accurately capture geometric and deformation parameters. The experimental results revealed a consistent reduction in tensile strength and ductility in all the welded configurations compared to the base material. The application of the second weld layer further intensified this effect, while specimen orientation influenced the degree of mechanical degradation. Microstructural analysis confirmed carbide refinement and good adhesion, but also identified welding-induced defects and residual stresses as factors that contributed to performance loss. The findings highlight a clear trade-off between improved surface wear resistance and compromised structural properties, underscoring the importance of process optimization. Strategic selection of welding parameters and bead orientation is essential to balance functional durability with mechanical integrity in industrial applications. Full article
(This article belongs to the Special Issue Advances in Welding of Alloy and Composites (2nd Edition))
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