现代制造工程Issue(12)：29-37,9.DOI:10.16731/j.cnki.1671-3133.2023.12.005
激光能量密度和储存条件对SLM成形AlSi10Mg性能的影响
Effect of laser energy density and storage conditions on the properties of SLM formed AlSi10Mg
摘要
Abstract
The effect of Laser Energy Density(LED)and powder storage conditions on the properties of AlSi10Mg alloy formed using Selective Laser Melting(SLM)technology was studied.An orthogonal experimental design method was used to study the effect of LED on the density of AlSi10Mg specimens,considering the main influencing factors such as laser power,scanning speed and scanning distance.The optimal parameters were then used to form AlSi10Mg powder under different storage conditions,and the effect of powder storage on the properties of formed parts was analyzed.The results show that the density of formed parts increases first and then decreases as the LED increases.The best performance was observed within the range of 70～100 J/mm3 LED.A low LED can lead to unfused defects,while a high LED can result in shrinkage porosity.The difference between po-rosity and hydrogen porosity was analyzed by pore size and distribution.Formed parts from powder stored in a humid environment exhibit significantly decreased surface quality,density,hardness and tensile properties compared to those from the original pow-der,and the worse the storage temperature,the worse the formed parts perform.关键词
选区激光熔化/AlSi10Mg/激光能量密度/致密化/储存条件Key words
selective laser melting/AlSi10Mg/laser energy density/densification/storage conditions分类
机械制造引用本文复制引用
杨保伟,牛宗伟,付华,滕涛,张强,赵阳,王文宇,蒋瑞鑫..激光能量密度和储存条件对SLM成形AlSi10Mg性能的影响[J].现代制造工程,2023,(12):29-37,9.基金项目
国家重点研发计划资助项目(2022YFF0609000) （2022YFF0609000）
