0　引言流动介质冲刷材料表面造成损伤,使工业生产中很多机器和零件遭受损坏,特别是以高冲击速度的流体更为严重.由于高速流动的流体内,局部压力降低,可能产生汽化、形成气泡.这些气泡进入流体的高压区后,受压缩而溃灭,就产生一种冲击波,撞击材料表面.在这种冲击波的作用下材料 0 Introduction Flowing media scouring the surface of materials causes damage to many machines and parts in industrial production, especially at high impact velocities, which can vaporize and form bubbles as a result of localized pressure reductions in high-velocity fluids These bubbles enter the high pressure zone of the fluid and collapse upon compression, creating a shock wave that impinges on the surface of the material. Under this shock wave, the material