Laser Shock Peening: From Fundamentals to Applications

Dear Colleagues,

Laser shock peening (LSP) has emerged as a promising laser-based surface treatment technology featuring high pressure (1 GPa^-1 TPa), high energy (more than 1 GW), ultra-fast (no more than nanosecond scale), and ultra-high strain rate (more than 10⁶ s^-1). LSP’s unique surface severe plastic deformation process has been shown to enhance the wear, corrosion, and fatigue performance of metallic materials and alloys by introducing gradient microstructure, work hardening, and beneficial compressive residual stress. In recent decades, LSP has seen rapid development and wide-scale  implementation in various industrial fields, including aerospace, nuclear, and biomedical applications. Extensive research has been conducted to reveal the relationship among surface integrity, microstructure, property/performance, and the LSP process. The demand for LSP technology in laser processing is steadily increasing.

The current Special Issue focuses on fundamental mechanisms, innovative developments, and novel applications of LSP. In essence, it covers surface integrity, microstructure, and properties of target materials; simulation; quality monitoring; and processing windows of LSP. It also covers innovative developments such as ultra-short-pulse, micro-scale, and multi-energy-field assisted LSP, and application of LSP in additive manufacturing. Reviews on mechanisms, laser systems, microstructural evolution, engineering performance, challenges and future trends in LSP of metallic materials and alloys are also welcomed.

Prof. Dr. Hongyu Zheng
Dr. Zongshen Wang
Guest Editors

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