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用不同工艺参数的强流脉冲离子束技术对钛基压气机叶片进行表面轰击,对离子束诱发的表面形貌进行分析。结果表明,强流脉冲离子束辐照在钛合金表面形成尺寸约为几至几十微米的熔坑和网状裂纹的典型形貌。当单脉冲能量密度为1.44 J/cm2、5次脉冲辐照时,表面熔坑密度最大;熔坑是影响表面粗糙度的主要因素。随束流密度的提高,被辐照试样表面达到相对光滑所需的脉冲次数减少。
High intensity pulsed ion beam technique with different process parameters was used to bombard titanium-based compressor blades and the surface morphology induced by ion beam was analyzed. The results show that the intense current pulsed ion beam irradiates the surface of titanium alloy to form the typical morphology of craters and reticular cracks with the size of several tens to several tens of micrometers. When the single pulse energy density is 1.44 J / cm2, five times pulse irradiation, the density of the surface crater is the largest; the crater is the main factor that affects the surface roughness. As the beam density increases, the number of pulses required to achieve a relatively smooth surface on the irradiated sample decreases.