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Advanced Welding Technologies and Additive Manufacturing of Alloys and Metals (3rd Edition)

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

Deadline for manuscript submissions: 20 March 2026 | Viewed by 450

Special Issue Editors


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Guest Editor
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology at Weihai, Weihai 264209, China
Interests: microstructure; dissimilar metals; welded joints
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Materials Science & Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: welding; additive manufacturing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue focuses on the latest research findings in welding and additive manufacturing technologies for advanced metal materials. It covers topics including the microstructure, mechanical properties, and quality control of welding and additive manufacturing based on heat sources such as arcs, lasers, and electron beams.

The key areas of focus include new strengthening mechanisms, the relationship between microstructure and properties, new microstructure control technologies, process stability, and online defect detection methods.

This Special Issue aims to explore the advanced welding and additive manufacturing of alloys and metals and highlight the basic principles of microstructure and property regulation. The articles presented in this Issue will address various topics, ranging from the exploration of advanced welding technologies to microstructure regulation and the performance improvement of alloys and metals.

Dr. Ting Wang
Dr. Ke Han
Guest Editors

Manuscript Submission Information

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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
  • additive manufacturing
  • microstructure
  • mechanical properties

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Published Papers (1 paper)

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Research

23 pages, 29181 KB  
Article
Achieving Simultaneous Enhancement of Strength and Ductility in Aluminum Matrix Composites Reinforced by Dual-Scale Hybrid Reinforcement via Friction Stir Processing
by Zikun Wang, Xianyong Zhu, Chen Wang, Xiong Xiao, Ke Zhang, Cheng Jiang and Jiaan Liu
Materials 2025, 18(20), 4780; https://doi.org/10.3390/ma18204780 - 19 Oct 2025
Viewed by 349
Abstract
Overcoming the strength–ductility trade-off in conventional aluminum matrix composites (AMCs) remains a significant challenge. This study employs dual-scale hybrid reinforcement particles comprising micron-sized Cu and nano-sized Ti, alongside bimodal micro-sized pure Al powders as matrix fillers. The AMCs were fabricated through ball milling [...] Read more.
Overcoming the strength–ductility trade-off in conventional aluminum matrix composites (AMCs) remains a significant challenge. This study employs dual-scale hybrid reinforcement particles comprising micron-sized Cu and nano-sized Ti, alongside bimodal micro-sized pure Al powders as matrix fillers. The AMCs were fabricated through ball milling (BM) combined with multi-pass friction stir processing (FSP). The homogenously distributed hybrid reinforcement particles generate an integrated composite region consisting of both coarse-grained (CG) and fine-grained (FG) structures, demonstrating enhanced material characteristics. The interwoven network of coarse- and fine-crystalline domains constructs a heterogeneous architecture that enables simultaneous improvement in both strength and ductility properties. The micron-Cu acts as a skeletal support within the matrix, enhancing load transfer efficiency and effectively hindering dislocation motion. The nano-Ti and in situ intermetallics facilitate grain refinement via the pinning effect and promote heterogeneous nucleation, which contributes to stress dispersion and dislocation obstruction. The addition of dual-scale micron-sized pure Al powder particles promotes the formation of the heterogeneous architecture, which enhances the balancing of strength and ductility in the composite. Following compositing (Al10-5Cu-10Ti-10Al20), the alloy exhibits an ultimate tensile strength (UST) of 267 MPa, a hardness of 98 HV, and an elongation of 16.7%, representing increases of 193.4%, 226.7%, and 9.9%, respectively, relative to the base metal. Full article
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