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Laser Welding and Surface Treatment of Advanced Materials

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A Special Issue of Materials (ISSN 1996-1944) belonging to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 April 2027 | Viewed by 2765

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Editors

Dr. Yayun Liu

E-Mail Website
Guest Editor

School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215021, China
Interests: coating technology; green machining; tool design and preparation; micro-texture; self-lubricating; tribology
Special Issues, Collections and Topics in MDPI journals

Dr. Kedong Zhang

E-Mail Website
Guest Editor

School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215021, China
Interests: micro-texture; surface coatings; cutting tools; energy field-assisted precision machining; nanofluids

Dr. Ning Jiang

E-Mail Website
Guest Editor Assistant

School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215021, China
Interests: laser transmission welding; trajectory optimization design; welding device structural design

Special Issue Information

Dear Colleagues,

Material-processing laser technologies are being increasingly used in the laser device industry. This is the result of dynamic developments in the field of the design and construction of laser devices, as well as in the improvement in the technical parameters of laser devices and the characteristics of laser radiation.

One of the main applications of laser technologies is in the welding and surface treatment of materials. The laser beam, as a heat source, can provide high-power density and a low beam spot diameter in welding processes, thus providing high penetration depth; high welding speed; and low, controllable heat input.

On the other hand, in the field of surface treatment, the flexibility of shaping laser beams can provide different beam spot profiles and sizes, and different beam spot energy distributions adjusted for controllable heating, melting, or evaporation of the substage material. Therefore, lasers are used in different processes of surface treatment.

The purpose of this Special Issue is to present the latest developments in the field of research on laser welding technologies and surface treatment technologies. We look forward to receiving your contributions.

Dr. Yayun Liu
Dr. Kedong Zhang
Guest Editors

Dr. Ning Jiang
Guest Editor Assistant

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Keywords

laser welding
materials processing
surface treatment
surface textures

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Published Papers (3 papers)

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Research

19 pages, 7645 KB

Open AccessArticle

Study on the Low-Damage Mechanism of Green ZrO₂ Ceramics Under Ultrasonic Elliptical Vibration-Assisted Cutting

by Helin Chen, Fanshuo Jia, Qi Zhu, Yayun Liu and Chuanyang Wang

Materials 2026, 19(17), 3624; https://doi.org/10.3390/ma19173624 - 26 Aug 2026

Viewed by 163

Abstract

Ultrasonic elliptical vibration was applied to the machining of green ZrO₂ ceramics to investigate its effects on surface damage and tool wear. The experimental results were validated using discrete element simulations. Compared with conventional cutting, ultrasonic elliptical vibration-assisted cutting (UEVC) reduces surface roughness. The maximum reduction reaches 23.20% at a depth of cut of 0.8 mm and 25.39% at a cutting speed of 300 m/min. In addition, it reduces the average flank wear width by 11.5%. A substantial decrease in tangential force is observed at a depth of cut of 0.8 mm, an ultrasonic amplitude of 4 µm, and higher cutting speeds. Although the thickness of the surface compaction layer increases with cutting depth, UEVC reduces it by up to 59.33% at a depth of 0.8 mm. The PFC2D simulations predict lower subsurface residual stress magnitudes under UEVC than under CT. The chips generated during machining change from block-shaped chips under conventional cutting to powder-shaped chips under UEVC. This transformation facilitates chip removal. In addition, UEVC suppresses abrasive wear by minimizing scratching of the tool flank face from hard particles. Full article

(This article belongs to the Special Issue Laser Welding and Surface Treatment of Advanced Materials)

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12 pages, 2425 KB

Open AccessArticle

Direct Fabrication of Inclined-Sidewall Microgrooves with Shaped Flat-Top Beams

by Jianyong Mao, Wenqiang Chen, Kai Chen, Xun Li, Yu Tan, Ming Li and Lei Zhang

Materials 2025, 18(22), 5204; https://doi.org/10.3390/ma18225204 - 17 Nov 2025

Cited by 1 | Viewed by 1024

Abstract

Microgrooves have demonstrated significant application value across various fields. As a key processing technology, femtosecond laser processing exhibits notable advantages due to its high precision and minimal thermal impact. This study presents a method for fabricating microgrooves with inclined sidewalls using shaped flat-top laser beams. By controlling both the beam shape and scanning parameters, microgrooves with tailored sidewall morphology are produced in a single scan on silicon wafers. The optical performance of the fabricated structures is further evaluated through blazed grating prototypes. The experimental results aligned well with theoretical predictions. These results confirm that the proposed approach provides a viable technical pathway for efficient and high-quality fabrication of functional microstructures on comparable materials. Full article

(This article belongs to the Special Issue Laser Welding and Surface Treatment of Advanced Materials)

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16 pages, 2720 KB

Open AccessArticle

Analysis of Quasi-Simultaneous Laser Welding in T-Joint Configuration for PMMA-ABS Using Circular Wobble Geometry

by Antonio Lezzoche, Giulia Mossotti, Carmelo Nicosia, Marco Baggi, Michele Perlo, Luciano Scaltrito and Andrea Ancillao

Materials 2025, 18(21), 4819; https://doi.org/10.3390/ma18214819 - 22 Oct 2025

Cited by 1 | Viewed by 1085

Abstract

The focus of this study was the investigation of the quasi-simultaneous laser welding (QSW) technique of polymethyl methacrylate (PMMA) and acrylonitrile butadiene styrene (ABS) in a T-joint configuration using a circular wobble laser path. The main aim was to find how laser parameters, such as scanning speed, number of scans, and laser power, influence key indicators of weld quality: penetration depth and weld strength. A range of scanning speeds (1–2 m/s) and scan repetitions (20–70) was explored, with the goal of keeping the total welding time around 1 s, a time compatible with industrial mass production. The results demonstrated a clear correlation between linear energy density and penetration depth. Deeper penetrations were achieved at higher energy levels. Weld strength was maximized with a lower number of scans (20) and higher powers (above 130 W). The configuration offering the best combination of weld strength (1137 N) and total welding time (0.8 s) was identified, demonstrating the suitability of QSW for mass production. Full article

(This article belongs to the Special Issue Laser Welding and Surface Treatment of Advanced Materials)

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