Research Progress in Laser Surface Strengthening and Micro-Nano Manufacturing Technology

Abstract

Although the development of laser surface strengthening and surface micro-nano structure manufacturing technologies in China began relatively late， it has progressed rapidly in recent years.Significant advancements have been made in areas such as the fundamental theories of laser-material transient interactions， laser shock peening ， laser surface melting， laser surface cladding， laser direct writing and laser-induced surface microstructures.However， compared to countries with earlier research in laser technology， China still faces challenges such as a lack of pioneering process technologies and weak fundamental research in laser-material transient interactions.Additionally，there are gaps in industrial technology applications and equipment development.In this paper， the research progress in laser surface strengthening and micro-nano manufacturing technology was reviewed.With the continuous advancement of micro-nano structure manufacturing industry， the increasing application demand for new alloys and new materials，and heightened environmental requirements，laser surface strengthening and laser surface micro-nano structure manufacturing technologies are expected to continue progressing towards higher efficiency，precision and performance，with further developments in practical applications.

Keywords

• laser surface strengthening； micro-nano manufacturing； laser shock peening； laser surface melting； laser cladding； laser direct writing； laser-induced surface microstructures