激光与CMT+P电弧复合增材工艺对2024铝合金气孔缺陷的影响规律

doi:10.11896/cldb.23040011

材料导报

2024, Vol. 38

Issue (14): 23040011-9 https://doi.org/10.11896/cldb.23040011

金属与金属基复合材料

激光与CMT+P电弧复合增材工艺对2024铝合金气孔缺陷的影响规律

张志强¹, 贺世伟¹, 李涵茜¹, 路学成¹, 张天刚¹, 王浩^2,*

1 中国民航大学航空工程学院,天津 300300
2 天津职业技术师范大学机械工程学院,天津 300300

Effect of Laser and CMT+P Arc Hybrid Additive Process on Porosity Defectsin of 2024 Aluminum Alloy

ZHANG Zhiqiang¹, HE Shiwei¹, LI Hanxi¹, LU Xuecheng¹, ZHANG Tiangang¹, WANG Hao^2,*

1 College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2 School of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300300, China

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摘要高强铝合金激光-电弧复合增材制造技术在民用航空领域具有广阔的应用前景,但其气孔率的控制仍存在技术难题。本工作基于激光与冷金属过渡加脉冲(CMT+P)复合增材制造技术,对增材制造2024铝合金薄壁结构件的气孔率开展研究。通过单因素试验,研究了送丝速度、扫描速度、激光功率等工艺参数对薄壁增材件的宏观形貌、气孔率及气孔尺度分布的影响规律。在单因素试验的基础上,以薄壁增材件的气孔率为响应值,通过响应面中心组合试验(CCD)优化工艺参数。结果表明,送丝速度、扫描速度、激光功率等工艺参数都会对薄壁增材件的宏观形貌、气孔率及气孔尺度分布产生影响;建立的二阶回归响应面模型能直观地反映2024铝合金激光与CMT+P电弧复合增材工艺参数与气孔率之间的关系,可用于预测不同工艺参数下薄壁增材件的气孔率;通过二阶回归模型得到优化的2024铝合金激光与CMT+P复合增材工艺参数范围为:送丝速度4.8~5.0 m/min、扫描速度16~18 mm/s、激光功率2 000~2 200 W。

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	张志强
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	王浩

关键词: 高强铝合金激光-CMT+P 增材制造单因素试验响应面法气孔率

Abstract: The laser-arc hybrid additive manufacturing technology for high-strength aluminum alloys has a broad application prospect in civil aviation, but there are still technical challenges in controlling its porosity. This work investigated the porosity of thin-walled additive parts made of 2024 aluminum alloy based on laser and cold metal transition plus pulse (CMT+P) arc hybrid additive manufacturing technology. The influence of process parameters such as wire feeding speed, scanning speed and laser power on the macroscopic morphology, porosity and pore scale distribution of the thin-walled additive parts was investigated through single-factor tests. Based on the single-factor test, the process parameters were optimized by the response surface central composite design test(CCD) with the porosity of the thin-walled additive parts as the response value. The results show that the process parameters such as wire feeding speed, scanning speed and laser power all affect the macroscopic morphology, porosity and pore scale distribution of the additive parts; the established quadratic regression response surface models can visually reflect the relationship between the process parameters and the porosity of 2024 aluminum alloy laser and CMT+P arc hybrid additive, and can be used to predict the porosity of thin-walled additive parts under different process parameters; the optimized parameters of the 2024 aluminum alloy laser and CMT+P hybrid additive process obtained by the quadratic regression model range from 4.8—5.0 m/min for the wire feeding speed, 16—18 mm/s for the scanning speed, and 2 000—2 200 W for the laser power.

Key words: high-strength aluminum alloy laser-CMT+P additive manufacturing single-factor test response surface method porosity

出版日期: 2024-07-25 发布日期: 2024-08-12

ZTFLH:	TG455
	V252.2

基金资助: 天津市教委科研计划项目(2020KJ020);航空科学基金(2020Z049067002)

通讯作者: * 王浩,天津职业技术师范大学机械工程学院讲师、硕士研究生导师。2010年哈尔滨工业大学材料成型及控制工程专业本科毕业,2012年哈尔滨工业大学材料加工工程专业硕士毕业,2018年天津大学材料加工工程博士毕业。目前从事电弧焊接、电弧增材制造等方面的研究工作。发表论文10余篇,包括Materials Science and Engineering: A、Science and Technology of Welding & Joining、The International Journal of Advanced Manufacturing Technology等。wanghao@tute.edu.cn

作者简介: 张志强,中国民航大学航空工程学院副教授、硕士研究生导师。2012年河北工业大学材料加工工程专业硕士毕业,2018年天津大学材料加工工程专业博士毕业后到中国民航大学工作至今。目前主要从事高性能焊接、增材制造、表面技术等方面的研究工作。发表论文80余篇,包括Corrosion Science、Applied Surface Science、Materials & Design、Tribology International、Surface & Coatings Technology、Journal of Manufacturing Processes等。

引用本文:

张志强, 贺世伟, 李涵茜, 路学成, 张天刚, 王浩. 激光与CMT+P电弧复合增材工艺对2024铝合金气孔缺陷的影响规律[J]. 材料导报, 2024, 38(14): 23040011-9.
ZHANG Zhiqiang, HE Shiwei, LI Hanxi, LU Xuecheng, ZHANG Tiangang, WANG Hao. Effect of Laser and CMT+P Arc Hybrid Additive Process on Porosity Defectsin of 2024 Aluminum Alloy. Materials Reports, 2024, 38(14): 23040011-9.

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http://www.mater-rep.com/CN/10.11896/cldb.23040011 或 http://www.mater-rep.com/CN/Y2024/V38/I14/23040011

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