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Metals
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Advanced Laser Welding Technology of Alloys
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Advanced Laser Welding Technology of Alloys

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

Deadline for manuscript submissions: 31 July 2026 | Viewed by 1444

Special Issue Editor

Dr. Yanxi Zhang

E-Mail Website
Guest Editor
Guangdong Provincial Welding Engineering Technology Research Center, Guangdong University of Technology, Guangzhou 510006, China
Interests: laser welding; laser welding of dissimilar materials; numerical simulation of welding process; welding defect detection
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue on "Advanced Laser Welding Technology of Alloys" aims to explore the latest advancements and innovations in the field of laser welding for various alloy materials. Laser welding has become a crucial technique in modern manufacturing due to its precision, efficiency, and ability to handle complex geometries. It offers numerous advantages such as minimal heat-affected zones, high welding speeds, and excellent joint quality. However, when dealing with different alloys, challenges arise in terms of material properties, joint integrity, and process optimization. This collection of papers will cover a wide range of topics including the development of novel laser welding processes tailored for specific alloys, the investigation of the microstructural evolution and mechanical properties of welded joints, and the application of advanced characterization techniques to understand the underlying mechanisms. By bringing together cutting-edge research from both academia and industry, this Special Issue seeks to provide valuable insights and solutions for improving the laser welding of alloys, ultimately contributing to the advancement of high-quality manufacturing in various sectors such as automotive, aerospace, and electronics.

Dr. Yanxi 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

  • laser welding
  • alloy materials
  • welding process

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

18 pages, 8134 KB  
Article
Research on a High-Quality Welding Method for Multi-Layer Aluminum Foil Current Collectors Based on Laser Power Control
by Jingang Liu, Yun Chen and Liang Guo
Metals 2026, 16(2), 150; https://doi.org/10.3390/met16020150 - 26 Jan 2026
Viewed by 530
Abstract
Reliable joining of multi-layer aluminum foil current collectors is crucial for enhancing the performance and safety of high-capacity lithium-ion batteries. However, laser welding of such thin-thick aluminum combinations is often hindered by porosity, cracks and unstable weld-pool behavior. In this study, a ring-mode [...] Read more.
Reliable joining of multi-layer aluminum foil current collectors is crucial for enhancing the performance and safety of high-capacity lithium-ion batteries. However, laser welding of such thin-thick aluminum combinations is often hindered by porosity, cracks and unstable weld-pool behavior. In this study, a ring-mode fiber laser combined with sinusoidal oscillation and linearly gradient power modulation was employed to achieve high-quality lap welding between 80 layers of 1060 aluminum foil (1 mm in total thickness) and a 1.5 mm thick aluminum plate. Welding experiments and thermo-mechanical simulations were conducted to investigate the effects of welding speed (15–45 mm/s) and central-power modulation parameters (−2, 0, +2, +4) on weld morphology, defect formation, and mechanical properties. The results indicate that increasing the welding speed can effectively suppress cracks and improve the shear strength from 249.8 N to 403.9 N, but it also leads to an increase in porosity from 5.78% to 12.26% and deterioration of the weld reinforcement. Higher central-power modulation (+2, +4) transformed the weld-pool geometry from an ω shape to U shape, effectively suppressing fusion-line cracks but leading to increased porosity (up to 8.41%) and deteriorated surface morphology. Overall, a low welding speed of 15 mm/s combined with an optimized power modulation strategy achieves effective crack suppression while maintaining controlled porosity, resulting in a welded joint with superior comprehensive performance. This research provides a robust process solution for high-quality laser welding of multi-layer aluminum foil current collectors in power battery manufacturing. Full article
(This article belongs to the Special Issue Advanced Laser Welding Technology of Alloys)
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24 pages, 4368 KB  
Article
Research on Defect Detection by Finite Element Simulation Combined with Magnetic Imaging
by Chunmei Xu, Hongliang Gao, Yanxi Zhang, Zhengfeng Wang, Yongbiao Luo, Jian Wang, Md Rakibul Hasan, Tanmoy Mondal and Yanfeng Li
Metals 2026, 16(1), 95; https://doi.org/10.3390/met16010095 - 15 Jan 2026
Cited by 1 | Viewed by 526
Abstract
This study investigates the magneto-optical imaging (MOI) characteristics of weld defects under alternating magnetic field excitation. A magneto-optical sensor is employed to detect different types of weld defects, and the correlation between MOI features and magnetic field intensity is analyzed based on the [...] Read more.
This study investigates the magneto-optical imaging (MOI) characteristics of weld defects under alternating magnetic field excitation. A magneto-optical sensor is employed to detect different types of weld defects, and the correlation between MOI features and magnetic field intensity is analyzed based on the Faraday magneto-optical effect. A finite element analysis (FEA) model integrated with a magnetic dipole model is established to explore the relationship between lift-off values and leakage magnetic field intensity, while clarifying the connection between magnetic flux leakage (MFL) signals and defect size as well as type. The results demonstrate that defects of varying sizes and types generate distinct MFL intensities. Meanwhile, in the MOI-based nondestructive testing (NDT) experiments, the gray values of MO images corresponding to defects of different sizes and types exhibit significant differences, indicating that the gray values of MO images can reflect the magnitude of leakage magnetic field defects. This research lays a theoretical foundation for industrial MOI nondestructive testing and provides clear engineering guidance for defect detection. Full article
(This article belongs to the Special Issue Advanced Laser Welding Technology of Alloys)
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