采用固体渗硼 +激光表面处理的复合热处理工艺 ,使表层得到共晶型硼化物以期降低渗硼层脆性 ,提高其耐磨性。借助扫描电镜和光镜对试样表层、显微组织进行观察 ,探讨了硼共晶产生的机理以及渗硼层在激光作用下的行为 ,并进行了磨粒磨损试验。试验结果表明 ,经激光处理后渗硼层表层获得了共晶化组织 ,使之得到适当的硬度和韧性配合 ,耐磨性提高了 92 %。 Solid boriding + laser surface treatment of the composite heat treatment process, the surface eutectic boride obtained in order to reduce the boronizing brittleness and improve its wear resistance. Scanning electron microscopy and light microscopy were used to observe the surface and microstructure of the sample. The mechanism of boron eutectic formation and the behavior of boronizing layer under the effect of laser were discussed. Abrasive wear tests were carried out. The experimental results show that after laser treatment, the eutectic structure is obtained on the surface of the boronizing layer, so that proper hardness and toughness are obtained, and the abrasion resistance is improved by 92%.