Research on the technical principle and typical applications of laser shock processing

Abstract Laser shock processing (LSP) is a novel surface hardening technology, utilizing the stress effect generated by laser-induced plasma shock waves, with the characteristics of better hardening effects, higher processing precision and strong controllability. Nowadays, LSP is widely applied in many fields such as the high-end equipment manufacturing industry. In order to further understand the LSP technology. In this work, the technical principle of LSP is reviewed through basic principle of LSP, enhanced mechanical properties, micro-structure evolution and simple process mechanism. In addition, some typical applications of LSP are introduced briefly from the aspect of aerospace industry, nuclear power industry, biomedical and material forming. This work will provide a theoretical guidance for researchers to further explore the mechanism of LSP and promote to the development of LSP.