基于机器学习与多目标优化的<strong>304L</strong>不锈钢激光粉末床熔融工艺优化研究

基于机器学习与多目标优化的304L不锈钢激光粉末床熔融工艺优化研究

徐青青, 闫震, 郭玉玉, 侯娟, 王皞, 黄爱军

Research on Optimization of Laser Powder Bed Fusion Process for 304L Stainless Steel Based on Machine Learning and Multi-Objective Optimization

XU Qingqing, YAN Zhen, GUO Yuyu, HOU Juan, WANG Hao, HUANG Aijun

表3 非支配排序遗传算法II (NSGA-II)中工艺参数的约束范围

Table 3 Constraint ranges of process parameters in the NSGA-II

Process parameter	Unit	Constraint range
Powder size	μm	32.1
Laser spot	μm	100
Laser power	W	100-400
Scanning speed	mm·s^-1	700-1400
Hatch distance	μm	30-150
Layer thickness Energy density	μm J·mm^-3	40 40-90
Gauge length	mm	15
Gauge area	mm²	7.07
Specimen orientation	-	Horizontal