文献类型：期刊文献

英文题名：Magnetic-assisted laser shock peening of WE43 magnesium alloys with real-time imaging of plasma dynamics and acoustic emission monitoring

作者：Hu, Hongbiao[1];Wang, Zongshen[2];Guo, Zhenshan[1];Wu, Yongling[1];Zheng, Hongyu[1]

机构：[1]Shandong Univ Technol, Ctr Adv Laser Mfg CALM, Sch Mech Engn, Zibo 255000, Peoples R China;[2]Guangdong Ocean Univ, Sch Mat Sci & Engn, Yangjiang 529500, Peoples R China

年份：2026

卷号：347

外文期刊名：JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001620497300001)、、WOS

基金：The authors would like to acknowledge the financial supports pro-vided by Natural Science Foundation of China (U24A20109) , Shandong Provincial Natural Science Foundation (ZR2023ME134 and ZR2022ZD07) , Scientific Innovation Project for Young Scientists in Shandong Provincial Universities (2021KJ068) .

语种：英文

外文关键词：Laser shock peening; Magnetic field; Microstructure; Plasma; Simulation; Monitoring

外文摘要：Laser shock peening (LSP) is an effective technique for enhancing the mechanical performance of magnesium alloys, however, its efficiency is often constrained by low laser energy coupling and the inherently low plasticity of the material. This study proposes a novel magnetic-assisted LSP (MLSP) strategy that incorporates static magnetic fields and real-time monitoring, including acoustic emission (AE) detection and intensified charge-coupled device (ICCD) plasma imaging. Numerical simulations of magnetic field intensity and plasma dynamics are conducted to clarify the MLSP process mechanism. The synergistic effects of plasma intensification and magnetoplastic dislocation unpinning enhance shock wave intensity and deepen the residual stress layer through the coupling of mechanical force, magnetic field, and material. The results show that applying a 0.8 T magnetic field markedly improves plasma confinement and energy density, reducing the longitudinal propagation distance to 3.7 mm-57.5 % shorter than without the magnetic field. Compared with the conventional LSP process, the MLSP process increases yield strength by 8.3 % and tensile strength by 6.5 % while maintaining excellent ductility. At the same time, MLSP markedly improves the compressive residual stress (CRS), achieving a peak value of-194.1 MPa (a 14.0 % increase), extends the CRS-affected layer depth to 776.3 mu m (a 10.1 % increase), and raises surface hardness by 23.3 %. In addition, MLSP induces pronounced microstructural evolution, including surface grain refinement to 34.5 mu m-a 14.4 % reduction compared with LSP samples-together with increased dislocation entanglement and a higher density of nano-precipitates.