摆动激光熔丝沉积增材制造2319铝合金工艺研究
Investigation on Process of Wire Oscillating Laser Additive Manufacturing of 2319 Aluminum Alloy
张震 1崔旭建 2宋汝晖 3李保理 4王燕霜 1吴世凯5
作者信息
- 1. 齐鲁工业大学(山东省科学院)机械工程学院,山东济南 250353
- 2. 北京工业大学激光工程研究院,北京 100124
- 3. 齐鲁工业大学(山东省科学院)激光研究所,山东济南 250353
- 4. 聊城产业技术研究院,山东聊城 252022
- 5. 齐鲁工业大学(山东省科学院)机械工程学院,山东济南 250353;北京工业大学激光工程研究院,北京 100124;齐鲁工业大学(山东省科学院)激光研究所,山东济南 250353
- 折叠
摘要
主要采用摆动激光熔丝沉积2319铝合金,通过优化工艺获得了良好的工艺窗口,研究沉积工艺对成形的影响规律.结果表明,相比光斑不摆动,摆动激光沉积2319铝合金能够减少沉积过程中的气孔和裂纹,改善沉积成形和工艺稳定性.其中圆形摆动和"∞"形摆动的成形最好,圆形摆动的热输入最小,最小为12.4 J/mm3.在50％搭接率的条件下获得的沉积层最平整.随着沉积层数的增加,气孔数量增加,成形逐渐稳定,最终在圆形摆动模式下获得了成形良好的沉积样品,沉积态下,XYZ方向的抗拉强度和延伸率分别为246 MPa、17.9％,267 MPa、8.9％,266 MPa、11.1％,样品的各向异性表现不明显.
Abstract
The 2319 aluminium alloy samples were deposited by the Wire Oscillating Laser Additive Manufacturing(O-WLAM)process.The optimal parameters were obtained by optimizing process and the effect of deposition parameters on the formability were studied.The results show that the O-WLAM process significantly reduced the porosity and improved the process stability and formability compared to non-oscillating laser.The circular and"oo"oscillating mode obtained optimal formation.The mini-mum heat input is 12.4J/mm3 under circular oscillating.The smoothest deposition layer was obtained under the condition of 50％overlap ratio.With the increase of the number of deposition layers,the number of pores increases,and the forming is gradually stable.Finally,the deposition samples with good forming are obtained in the circular oscillating mode.Under the deposition state,the tensile strength and elongation in the XYZ direction are 246 MPa and 17.9％,267 MPa,8.9％,266 MPa and 11.1％,respectively.The anisotropy of the sample is not obvious.
关键词
激光技术/摆动激光熔丝沉积/2319铝合金/工艺优化/宏观成形Key words
laser technique/wire oscillating laser additive manufacturing/2319 aluminium alloy/process optimization/formation引用本文复制引用
出版年
2024
NETL
NSTL
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