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| 铝合金电弧填丝增材制造技术研究 |
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从保强1,2, 苏 勇1,2, 齐铂金1,2, 赵 罡1,2, 王 强1,2, 祁泽武1,2
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1. 北京航空航天大学机械工程及自动化学院，北京 100191;2. 航空高端装备智能制造工信部重点实验室，北京 100191
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| 摘要: |
| 如何实现对铝合金电弧填丝增材构件内部气孔缺陷、外部成形及构件力学性能的有效控制是铝合金电弧填丝增材制造技术研究的重点和难点。介绍了研究团队在铝合金电弧增材制造气孔缺陷控制、成形及组织力学性能等方面的研究结果，研究表明：合理控制过程特征参数（电弧热输入、送丝速度、运动速度、保护气体流量等）可实现对铝合金内部气孔及成形尺寸的有效控制，为深入开展大尺寸铝合金构件电弧填丝增材制造的研究奠定了基础。 |
| 关键词: 铝合金 电弧填丝增材制造 气孔 性能 |
| 基金项目: |
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| Wire + Arc Additive Manufacturing for Aluminum Alloy Deposits |
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Cong Baoqiang1,2, Su Yong1,2, Qi Bojin1,2, Zhao Gang1,2, Wang Qiang1,2, Qi Zewu1,2
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1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191;2. MIIT?Key?Laboratory?of?Aeronautics?Intelligent?Manufacturing, Beijing 100191
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| Abstract: |
| The combination of an electric arc as heat source and wire as feedstock is referred to as WAAM (wire + arc additive manufacturing). It is particularly important and difficult to control the porosity defects, deposition dimensions and mechanical properties effectively in the WAAM for aluminum alloys. In this paper, the experimental studies on additive manufactured aluminum alloy deposits were introduced. The results show that the porosity, deposit dimensions and characteristics of microstructure and mechanical properties can be controlled by selecting proper parameters such as heat input, wire feed speed, travel speed and shielding gas flow rate. |
| Key words: aluminum alloys wire + arc additive manufacturing porosity mechanical properties |
