Hybrid Additive Manufacturing and Welding for Metal Alloys: Advances and Applications

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Additive Manufacturing".

Deadline for manuscript submissions: 30 June 2026 | Viewed by 786

Special Issue Editors


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Guest Editor
Departamento de Engenharia Mecânica, Faculdade de Ciências e Tecnologia, Pólo 2 da Universidade de Coimbra, Rua Luís Reis Santos, Pinhal de Marrocos, 3030-788 Coimbra, Portugal
Interests: multidisciplinary modeling of the material behavior; characterization of mechanical properties of coatings; artificial intelligence; multi-scale simulations and materials characterization; additive manufacturing
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Special Issue Information

Dear Colleagues, 

The rapid evolution of additive manufacturing (AM) and welding technologies has transformed the fabrication of metal alloys, enabling the production of complex, high-performance components for the aerospace, automotive, energy, and biomedical engineering industries, among others. The synergy between AM and welding processes, particularly in techniques like wire arc additive manufacturing (WAAM), directed energy deposition (DED), and friction stir additive manufacturing (FSAM), offers unique opportunities for overcoming many of the limitations inherent in traditional manufacturing.

Such hybrid approaches combine the layer-by-layer precision of AM with the robust joining capabilities of welding, yielding improved mechanical properties, greater microstructural control, and enhanced scalability for metal alloy applications.

This Special Issue, entitled “Hybrid Additive Manufacturing and Welding for Metal Alloys: Advances and Applications”, aims to explore interdisciplinary advancements at the intersection of AM and welding. We invite researchers and industry professionals from materials science, mechanical engineering, metallurgy, and manufacturing to contribute original research articles, reviews, and case studies that address topics including (but not limited to) the following:

  • Innovative welding-based AM techniques for metal alloys, including WAAM, DED, and FSAM;
  • Microstructural and mechanical properties of additively manufactured and welded metal alloys;
  • Process optimization and parameter control in hybrid AM–welding systems;
  • Integration of AM and welding for large-scale or multi-material metal alloy components;
  • Advanced characterization techniques for welded and AM structures;
  • Modeling and simulation of AM in metal alloy fabrication;
  • Applications of hybrid AM–welding technologies in industry;
  • Challenges and solutions in residual stress, distortion, and defect management;
  • Sustainability and cost-effectiveness of combined AM and welding processes;
  • Qualification and standardization frameworks for hybrid manufacturing processes;
  • Post-processing techniques for hybrid AM–welded components.

We encourage submissions that highlight innovative approaches, interdisciplinary perspectives, and practical applications to advance the understanding and implementation of these technologies. This Special Issue seeks to foster collaboration among researchers and provide a platform for disseminating cutting-edge findings in the field of metal alloy manufacturing.

Prof. Dr. Ali Khalfallah
Dr. Guido Di Bella
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-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

  • additive manufacturing
  • welding
  • adhesive bonding
  • metal alloys
  • wire arc additive manufacturing
  • powder bed fusion
  • directed energy deposition
  • friction stir additive manufacturing
  • laser welding
  • microstructure
  • mechanical properties
  • hybrid welding
  • modeling and simulation
  • process optimization

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Published Papers (1 paper)

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Research

23 pages, 5721 KB  
Article
An Investigation into the Influence of Weld Bead Sequence on Residual Stress Distribution in a High-Speed Train Bogie Beam Using Thermo-Elastic–Plastic Finite Element Analysis
by Gaojian Wang, Zhixu Mao, Chenyang Zhou, Zuoshi Yang, Yifeng Wang and Dean Deng
Metals 2025, 15(11), 1225; https://doi.org/10.3390/met15111225 - 6 Nov 2025
Viewed by 473
Abstract
The bogie serves as a critical structural component in high-speed trains, subjected to dynamic loads throughout its operational lifecycle. Enhancing the fatigue life of the bogie necessitates not only ensuring welding quality but also effectively managing welding residual stresses during the manufacturing process. [...] Read more.
The bogie serves as a critical structural component in high-speed trains, subjected to dynamic loads throughout its operational lifecycle. Enhancing the fatigue life of the bogie necessitates not only ensuring welding quality but also effectively managing welding residual stresses during the manufacturing process. In this study, an efficient and simplified thermal–elastoplastic finite element method was developed based on the ABAQUS software platform, and its reliability and applicability were validated through comparison with measured data. The computational approach was employed to investigate the distribution characteristics of welding residual stresses in a weathering steel bogie beam, with particular emphasis on the influence of different welding sequences on residual stress distribution. Simulated results demonstrate that the welding sequence significantly influences the residual stress distribution and magnitude within the beam. The numerical simulation methodology developed in this study offers a powerful tool for optimizing welding sequences to regulate residual stresses during the fabrication of bogie structures. Full article
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