The water-jet and shock waves generated by laser-induced cavitation were employed to the laser cavitation micro-forming (LCMF). The LCMF is a new method for fabricating micro features on two pieces of metal foils simultaneously. The mechanism of LCMF was investigated at the non-dimensional parameter γ (γ = L/2R_eq, where L is the width of the gap, and R_eq is the equivalent radius). The dynamic characteristics of laser-induced cavitation bubble in a gap were studied using a high-speed photography and numerical simulation. The shock waves were detected by the hydrophone and the velocity field distribution was obtained from numerical simulation. The 1060 aluminum foil was used in LCMF, and the surface morphology, forming depth, surface roughness and thickness distribution of the formed aluminum micropores were investigated. The results indicate that the non-dimensional parameter γ has a great impact on bubble evolution in a gap. At γ = 1.29, the pressure intensity of plasma shock wave, bubble collapse shock wave and water-jet are 72.7 MPa, 40 MPa and 65.3 MPa, respectively. The forming depth, surface roughness and thickness thinning ratio decreased with the increase of γ, and maximum thickness thinning occurred at the fillet.

利用激光诱导空化产生的水射流和冲击波进行激光空化微成形（LCMF）。LCMF 是一种在两片金属箔上同时制造微特征的新方法。在无量纲参数 γ (γ = L /2 R _eq，其中L是间隙的宽度，R _eq是等效半径）。使用高速摄影和数值模拟研究了间隙中激光诱导空化气泡的动态特性。激波由水听器检测，速度场分布由数值模拟得到。LCMF采用1060铝箔，对形成的铝微孔的表面形貌、成形深度、表面粗糙度和厚度分布进行了研究。结果表明，无量纲参数γ对间隙中的气泡演化有很大影响。在 γ = 1.29 时，等离子体激波、气泡破裂激波和水射流的压力强度分别为 72.7 MPa、40 MPa 和 65.3 MPa。成形深度、表面粗糙度和厚度减薄率随着γ的增加而减小，