【摘要】 研究了在激光功率 90 0W条件下 ,扫描速度对激光快速成型不锈钢零件组织、性能的影响。在各扫描速度下 ,所成型的不锈钢薄壁板件的组织均为枝晶组织。随扫描速度提高 ,不锈钢薄壁板的定向生长树枝晶组织细化 ,枝晶间距变小。同时其沿X方向的机械性能 (抗拉强度及硬度 )降低更多还原

【Abstract】 The influence of the laser scanning velocity on the microstructure and mechanical properties of the 316L stainless steel thin wall plate by laser direct forming was investigated. The results show that the obtained microstructure of the thin wall of stainless steel is composed of directionally solidified dendrites under varied scanning velocity, when laser power is 900W. Both the dendrite arm spacing and the transverse mechanical properties(the tensile strength and hardness) of the laser formed thin wall plate decrease with the increasing beam scanning rate.更多还原