激光束空域形态对激光定向能量沉积316L不锈钢热输运影响的数值模拟

任松, 吴家柱, 张屹, 张大斌, 曹阳, 尹存宏

Numerical Simulation on Effects of Spatial Laser Beam Profiles on Heat Transport During Laser Directed Energy Deposition of 316L Stainless Steel

REN Song, WU Jiazhu, ZHANG Yi, ZHANG Dabin, CAO Yang, YIN Cunhong

图2 不同空域形态因子(K)下的激光束空间密度分布示意图

Fig.2 Schematics of the spatial density distributions of GP (a), SGP1 (b), SGP2 (c), and FTP (d) respectively when the laser power P = 700 W and the beam radius rb = 1.2 mm (GP—Gaussian profile, SGP—super-Gaussian profile, FTP—flat-topped profile)