基于层分区扫描策略的选区激光熔化成形试验研究  

Experimental Research on Selective Laser Melting Forming Based on Layer Partition Scanning Strategy

作　　者：肖乐欢 刘玉德[1] 石文天[1] 韩剑 周裕圣 王堃 Xiao Lehuan;Liu Yude;Shi Wentian;HHan Jian;Zhou Yusheng;Wang Kun(School of Artificial Intelligence,Beijing Technology and Business University,Beijing 100048,China)

机构地区：[1]北京工商大学人工智能学院,北京100048

出　　处：《应用激光》2023年第10期41-52,共12页Applied Laser

基　　金：国家自然科学基金(51975006)。

摘　　要：选区激光熔化(SLM)成形质量主要由工艺参数与扫描策略复合作用决定。试验通过不同成层方式、叠层方式以及扫描方式的复合得到层分区扫描策略。而后以不同层分区扫描策略复合适宜工艺参数组合成形TC4样件,并对其进行质量研究。结果表明,采用层分区扫描策略成形的样件其致密度更高,电镜下显微组织中针状马氏体分布更为细密。采用层分区扫描策略成形100μm层厚的样件时,其边长尺寸误差率及表面粗糙度变小。运用层分区扫描策略成形的样件较未运用层分区扫描策略形成的样件具有更强的成形环境调节能力,成形质量更优。The quality of selective laser melting forming is mainly determined by the combination of process parameters and scanning strategy.In this experiment,the layer partition scanning strategy is obtained through the combination of different layering methods,stacking methods,and scanning methods.The TC4 samples were formed by combining appropriate process parameters with different layer partition scanning strategies.The quality of TC4 samples was studied.The results show that the samples formed by layer partition scanning strategy have higher density and finer distribution of acicular martensite in the microstructure under electron microscope.When the samples with 100μm layer thickness were formed by layer partition scanning strategy,the side length size error rate and surface roughness become smaller.The samples formed by layer partition scanning strategy have stronger ability to adjust the forming environment and better forming quality than the samples not formed by layer partition scanning strategy.

关 键 词：选区激光熔化 扫描策略 成层方式 叠层方式 层分区 TC4 

分 类 号：TN249[电子电信—物理电子学] TG146.23[一般工业技术—材料科学与工程]