铝合金点阵激光选区熔化成形及其准静态与动态压缩性能研究  

Quasi-static and dynamic compression properties of selective laser melted AlSi10Mg aluminum alloy lattice materials

作　　者：张康[1,2] 史子木 王幸福 ZHANG Kang;SHI Zimu;WANG Xingfu(University of Science and Technology of China,Hefei 230026,Anhui,China;ChinaKey Laboratory of Materials Physics,Solid-state Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,Anhui,China;Research Institute of Interdisciplinary Sciences(RISE)and School of Materials Science&Engineering,Dongguan University of Technology,Dongguan 523808,Guangdong,China)

机构地区：[1]中国科学技术大学,安徽合肥230026 [2]中国科学院合肥物质科学研究院固体物理研究所,安徽合肥230031 [3]东莞理工学院交叉科学研究中心,广东东莞523808

出　　处：《金属加工（热加工）》2024年第8期31-40,共10页MW Metal Forming

基　　金：安徽省重点研发计划协同创新专项(NO.2021001);安徽省重大基础性研究项目(No.2023z04020015)。

摘　　要：研究探索了铝合金点阵材料的激光选区熔化(SLM)制备工艺,通过调整激光功率和扫描速率,成功制备出BCC型AlSi10Mg点阵结构,并系统考察了SLM工艺参数、热处理对铝合金点阵结构准静态与动态压缩性能的影响。试验结果表明:SLM技术制备的AlSi10Mg合金点阵结构具有良好的成形性,其压缩性能随激光功率增加而显著提升,且展现出明显的应变率强化效应。树脂填充进一步增强了铝合金点阵结构的抗冲击性能,并降低了基于组织缺陷的应变率敏感性,为该结构在缓冲防护、抗冲击及轻量化防爆装置等工程领域应用提供了支持。The preparation technology of aluminum alloy lattice materials using Selective Laser Melting(SLM)was explored in the study.By adjusting the laser power and scanning rate,the BCC-type AlSi10Mg lattice structure was successfully fabricated.The effects of SLM process parameters and heat treatment on the static and dynamic compressive properties of aluminum alloy lattice structures were systematically investigated.The experimental results indicated that the AlSi10Mg lattice structure prepared by SLM technology exhibited good formability.Its compressive properties were significantly enhanced with an increase in laser power and demonstrated a notable strain rate strengthening effect.The incorporation of resin filling further augmented the impact resistance of the aluminum alloy lattice structure and reduced the strain rate sensitivity associated with structural defects.This provides support for the application of this structure in engineering fields such as cushioning protection,impact resistance,and lightweight explosion-proof devices.

关 键 词：激光选区熔化 AlSi10Mg合金 点阵结构 动态压缩性能 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TG146.21[一般工业技术—材料科学与工程]