316L激光粉末床熔覆IN718偏析带形成过程的模拟

沈盟凯, 董太宁, 葛鸿浩, 石新升, 张群莉, 刘云峰, 姚建华

Simulation of the Formation Mechanism of Segregation Bands During IN718 Cladding on 316L Using Laser Powder Bed Fusion

SHEN Mengkai, DONG Taining, GE Honghao, SHI Xinsheng, ZHANG Qunli, LIU Yunfeng, YAO Jianhua

表3 激光熔覆工艺参数

Table 3 Laser cladding process parameters

Process parameter Symbol Value Unit Laser power P 900 W Scanning speed v 8 mm·s-1 Powder thickness Hp 0.2 mm Laser beam radius R 1 mm Laser defocusing amount Lh 15 mm