Microstructure and Mechanical Property Improvement of Welded Metal Joints (2nd Edition)

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

Deadline for manuscript submissions: 20 January 2027 | Viewed by 652

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Guest Editor
School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China
Interests: welding of dissimilar materials; additive manufacturing welding physics and numerical simulation; laser processing of materials; welding process detection and control
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Special Issue Information

Dear Colleagues,

The welding of materials, especially metal materials, is a hot topic in research focused on material processes. With the continuous development of welding technology, methods for the welding of metal materials is becoming increasingly important. Therefore, research on technology and performance is essential. This Special Issue is focused on the latest developments in metal material welding; its goal is to cover the welding of metal materials and explore research on the microstructure, performance, and interface behavior of these materials. The topics of interest also include primary development trends, engineering applications, and the numerical simulation of metal material welding. This article will cover all these topics, including the same and different metal materials, metal matrix composites, and their applications. Regarding processes, it will cover various welding processes, including traditional methods and emerging techniques (laser, electron beam, etc.). We welcome the submission of articles covering truly novel elements in the world of metal materials and processes that can effectively solve the welding problem between metal materials.

Dr. Jiankang Huang
Guest Editor

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Keywords

  • welding of dissimilar materials
  • welding methods
  • welding metal joints
  • residual stress
  • microstructural analysis
  • numerical simulation

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Published Papers (1 paper)

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Research

18 pages, 4995 KB  
Article
The Effect of Ultrasonic Vibration Assistance During Laser Lap Welding on the Microstructure and Properties of Galvanized Steel/Mg Joints
by Dan Wang, Chengsen Zhu, Juming Gao, Hongliang Li, Dongdong Zhuang, Nan Xu, Xinyi Zhao, Ke Han and Zeyu Wang
Metals 2026, 16(1), 120; https://doi.org/10.3390/met16010120 - 20 Jan 2026
Viewed by 383
Abstract
In this work, a laser lap-welded joint of galvanized steel/Mg and a laser lap-welded joint of galvanized steel/Mg assisted by ultrasonic vibration were compared. By adjusting the laser beam power and ultrasonic amplitude, the appropriate welding process parameters were obtained. The weld formation, [...] Read more.
In this work, a laser lap-welded joint of galvanized steel/Mg and a laser lap-welded joint of galvanized steel/Mg assisted by ultrasonic vibration were compared. By adjusting the laser beam power and ultrasonic amplitude, the appropriate welding process parameters were obtained. The weld formation, microstructure and mechanical properties were studied and analyzed. The results indicated that the addition of ultrasonic vibration generated an excitation force with a certain frequency and amplitude on the weldment, making the molten metal in the molten pool produce ultrasonic forced vibration, and producing the effects of cavitation, acoustic streaming, mechanical stirring and heat, thus reducing welding residual stress and welding-deformation, porosity and incomplete-fusion defects. In addition, it can make the fusion zone transition evenly, improve the wettability, refine the weld grain, and reduce the average grain area from 583 μm2 to 324 μm2. Moreover, the distribution of Mg-Zn reinforcing phase at the interface was more uniform and denser, and the maximum tensile shear strength increased from 179.9 N/mm to 290 N/mm, indicating that the addition of ultrasonic vibration was conducive to improving the comprehensive mechanical properties of the joint. Full article
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