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Latest Research in Joining and Welding Processes

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

Deadline for manuscript submissions: 20 May 2025 | Viewed by 716

Special Issue Editor


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Guest Editor
Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, China
Interests: Pb-free solder; low-temperature solder; high-strength solder; thermal fatigue; creep; toughness; coupling damage; fracture mechanisms; interfacial microstructure; brazing; precision connection
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Special Issue Information

Dear Colleagues,

To utilize the advantages of different materials, they are usually used in combination; thus, welding and joining technologies are required. Welding is also an “additive manufacture” method that combines simple parts into complex components. The principles of welding and joining are fusion and diffusion between atoms. In different applications, the welding size ranges from nanoscale to meter scale, the metallurgical reaction time ranges from milliseconds to seconds, and the service environment of the welding structure also varies greatly. Research on welding and joining not only involves the nonequilibrium metallurgical reaction mechanisms of various materials, but also involves precise control. The service reliability of welding structures in complex environments should be evaluated. Therefore, welding and joining is still a broad and fast-growing research field with promising potential in modern industry.

In this Special Issue of Materials dedicated to the latest research in welding and joining processes, you are invited to contribute original research, short communications, and review articles.

Dr. Qingke Zhang
Guest Editor

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Keywords

  • welding
  • brazing
  • soldering
  • diffusion bonding
  • microjoining
  • metallurgical reaction
  • service reliability

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Published Papers (1 paper)

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Research

15 pages, 6405 KiB  
Article
The Effect of Pulse Frequency on the Microstructure and Corrosion Resistance of an AZ31B Magnesium Alloy Composite Coating with Electron-Beam Remelting and Micro-Arc Oxidation
by Yinghe Ma, Zhen Yu, Jinpeng Zhang, Yonghui Hu, Mengliang Zhou, Jinhui Mei, Zhihui Cai, Wenjian Zheng and Jianguo Yang
Materials 2025, 18(9), 1962; https://doi.org/10.3390/ma18091962 - 25 Apr 2025
Viewed by 133
Abstract
This study presents a systematic investigation into the influence of pulse frequency on the micro-arc oxidation (MAO) coating of AZ31B magnesium alloy following electron-beam remelting (EBR). The morphology, thickness, and corrosion resistance of the EBR-MAO composite coating were meticulously analyzed across various pulse [...] Read more.
This study presents a systematic investigation into the influence of pulse frequency on the micro-arc oxidation (MAO) coating of AZ31B magnesium alloy following electron-beam remelting (EBR). The morphology, thickness, and corrosion resistance of the EBR-MAO composite coating were meticulously analyzed across various pulse frequencies (100 Hz, 200 Hz, 300 Hz, 400 Hz) employing scanning electron microscopy (SEM), X-ray diffraction (XRD), and electrochemical measurement techniques. The results show that as the pulse frequency escalates from 100 Hz to 400 Hz, the average thickness of the EBR-MAO composite coating diminishes from 41.1 μm to 38.5 μm, reduced by 6.7% compared to 10.4% in the MAO coating. Concurrently, the porosity exhibits a reduction from 1.93% to 1.35%, accompanied by a densification of the coating’s structure. High pulse frequencies yield coatings with enhanced smoothness and fewer defects. Notably, the corrosion resistance of the coatings demonstrates significant improvement at higher frequencies (400 Hz) compared to their lower-frequency (100 Hz) counterparts, as evidenced by a tenfold increase in corrosion current density. This research underscores the pivotal role of pulse frequency in optimizing the protective qualities of MAO coatings on magnesium alloys. Full article
(This article belongs to the Special Issue Latest Research in Joining and Welding Processes)
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