中文摘要：

采用金属材料表面纳米化试验机对316L不锈钢进行了喷丸强化处理,采用激光共聚焦显微镜观察了不同喷丸条件下材料表面的三维形貌,测量了材料表面的粗糙度;采用洛氏硬度计测量了喷丸强化后材料表面的硬度;采用材料表面性能综合测试仪测试了材料的摩擦性能;采用扫描电子显微镜观察了磨痕的表面磨损形貌。结果表明：对于机械抛光表面,弹丸直径越大,喷丸强化后材料表面粗糙度和摩擦因数越小,硬度越大;喷丸时间增加到30 min,振动频率增加到50 Hz时材料表面粗糙度明显减小;弹丸直径越大,喷丸时间和振动频率对摩擦因数的影响越大;喷丸时间和振动频率越大,耐磨性越强,磨粒粒径越小且越均匀。

英文摘要：

The experiment of shot peening 316 L stainless steel was carried out by surface nano-crystallization testing machine. Threedimensional morphology of material surface under different shot peening condition was observed by laser confocal microscope,and the roughness of material surface was also measured. The hardness of material surface after shot peening was measured by Rockwell hardness meter. The friction properties of material was measured by the surface performance tester. The wore surface morphology of wear trace was carried out by scanning electron microscope. The result show that for mechanical polishing surface,the greater the shot diameter is,the smaller the roughness and friction coefficient of material surface after shot peening,and the greater the hardness. The roughness of material surface decrease obviously when time increased to 30 min,the vibration frequency increased to 50 Hz. The greater the shot diameter is,the greater the influence of shot peening time and vibration frequency on the friction coefficient. The greater the shot peening time and the vibration frequency are,the stronger the abrasion resistance,the smaller and the more uniform for the abrasive grains.