Laser shock imprinting (LSI) technology has attracted more and more researchers' interest in the fabrication of high-precision three-dimensional (3D) microstructures. These researchers found that LSI technology can improve the depth, accuracy, and mechanical properties of the formed parts. However, they also found that when the formed parts made of LSI are used in high temperature environment, the formed parts are easy to return to their initial state, which greatly limits the application of 3D microstructure and LSI technology. Therefore, it is very important to improve the accuracy and stability of microstructure and realize the rapid manufacturing of formed parts. Therefore, we use temperature-assisted laser shock imprinting (TALSI) technology to solve these problems. In addition, there have been many studies on the strengthening mechanism of hardness, tensile and fatigue properties of LSI technology, but there is still a blank in the research on its high temperature stability and strengthening mechanism. In this study, warm laser shock imprinting (WLSI) experiments were carried out, followed by high-temperature recovery experiments, and the stress and strain distributions were studied by numerical simulation. Then, the surface morphology, mechanical properties of the laser impact samples were tested and characterized by 3D optical profiler and scanning electron microscope (SEM), as a result, the effects of temperature on the plasticity, flow stress, dynamic yield strength and deformation springback of aluminum foil are obtained. In addition, the microstructure evolution of aluminum foil before and after WLSI treatment was characterized by transmission electron microscope (TEM) and electron backscatter diffraction (EBSD) technology, and the deformation mechanism and high temperature stability mechanism of WLSI were obtained. It is of great significance to understand the forming/strengthening mechanism of laser shock technology and the development of LSI technology in the future.

激光冲击压印 (LSI) 技术吸引了越来越多的研究人员对制造高精度 3D (3D) 微结构的兴趣。这些研究人员发现，LSI 技术可以提高成型零件的深度、精度和机械性能。然而，他们也发现，当LSI制成的成形零件在高温环境下使用时，成形零件很容易恢复到初始状态，这极大地限制了3D微结构和LSI技术的应用。因此，提高微观结构的精度和稳定性，实现成形零件的快速制造就显得尤为重要。因此，我们采用温度辅助激光冲击压印（TALSI）技术来解决这些问题。此外，关于LSI技术的硬度、拉伸和疲劳性能的强化机制已经有很多研究，但对其高温稳定性和强化机制的研究还存在空白。本研究首先进行了热激光冲击压印（WLSI）实验，然后进行了高温恢复实验，并通过数值模拟研究了应力应变分布。然后，通过3D光学轮廓仪和扫描电子显微镜（SEM）对激光冲击样品的表面形貌、力学性能进行测试和表征，结果，温度对塑性、流动应力、动态屈服强度和变形回弹的影响得到铝箔。此外，采用透射电子显微镜(TEM)和电子背散射衍射(EBSD)技术对WLSI处理前后铝箔的微观结构演变进行了表征，获得了WLSI的变形机制和高温稳定性机制。了解激光冲击技术的形成/强化机理以及未来LSI技术的发展具有重要意义。