焊管2025，Vol.48Issue(8)：80-88,9.DOI:10.19291/j.cnki.1001-3938.2025.08.010
MIG摆动电弧对2319铝合金增材制造表面形貌和性能的影响
Influence of MIG Oscillating Arc on Surface Morphology and Properties of 2319 Aluminum Alloy Additive Manufacturing
摘要
Abstract
To enhance the forming quality of 2319 aluminum alloy in MIG-based additive manufacturing,an oscillating arc technique was introduced to investigate the effects of oscillation parameters on porosity and surface morphology.Results indicate that in single-layer single-pass deposition,the oscillation amplitude has a significant impact on porosity and surface quality,with optimal results achieved at amplitudes of 5 mm under frequencies of 2 Hz and 3 Hz.In single-layer multi-pass deposition,the best surface morphology was observed at a frequency of 2 Hz and an offset of 11 mm.Porosity exhibited an increasing-then-decreasing trend with offset,reaching a maximum at 11.2 mm.The optimal process parameters were identified as a current of 130 A,voltage of 23 V,welding speed of 40 cm/min,oscillation frequency of 2 Hz,amplitude of 5 mm,and offset of 11 mm.The microstructure of the multilayer,multipass deposited parts consisted of alternating intralayer columnar grains and interlayer equiaxed grains,with Al2Cu identified as the secondary phase.Mechanical properties revealed that the as-deposited components exhibited favorable strength and ductility in all three directions.Research confirms that the oscillating arc technique can effectively and synergistically regulate porosity and surface morphology,offering theoretical guidance for the high-quality fabrication of aluminum alloy components.关键词
2319铝合金/MIG增材制造/摆动电弧/形貌和性能控制Key words
2319 aluminum alloy/MIG additive manufacturing/oscillating arc/morphology and property control分类
矿业与冶金引用本文复制引用
王志英,白嘉瑜,李代龙,李振岗,张建勋..MIG摆动电弧对2319铝合金增材制造表面形貌和性能的影响[J].焊管,2025,48(8):80-88,9.基金项目
国家重点研发计划项目"同/异质SiCp/Al复合材料构件激光智能焊接技术与装备"(项目编号2023YFB4606202). （项目编号2023YFB4606202）
