【摘要】 本文用同步送粉激光合金化法,研究了45号钢表面激光合金化层的组织结构,化学成分及显微硬度分布。试验结果表明,合金化层的组织由柱状晶和等轴晶组成,并存在特殊组织状态。合金化层内W、Co、C含量显著地高于基体含量,其显微硬度与基体相比也有较大提高。更多还原

【Abstract】 The investigation of laser alloying on 45~# steel surface with simultaneously powder injection is conducted in this paper. The experiments show that a specific form of dendritic and finer ledeburite microstructure are exhibited in alloyed zone, and the laser alloyed layer offers high tungsten, cobalt and carbon content as well as high microhardness.更多还原