| Al-6.3Cu铝合金电弧填丝增材制造成形与组织性能 |
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| 引用本文： | 孙红叶,从保强,苏勇,齐铂金,祁泽武,王强.Al-6.3Cu铝合金电弧填丝增材制造成形与组织性能[J].航空制造技术,2017(14). |
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| 作者姓名： | 孙红叶 从保强 苏勇 齐铂金 祁泽武 王强 |
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| 作者单位： | 北京航空航天大学机械工程及自动化学院,北京,100191 |
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| 基金项目： | 北京市科技计划装备制造专项资助项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 采用HPVP-GTAW电弧作为热源进行Al-6.3Cu合金的电弧填丝增材制造,试验研究送丝速度和运动速度对成形层高和层宽的影响,并对比分析常规VP-GTAW和HPVP-GTAW两种热源对构件组织性能的影响。结果表明:协调调节WFS和TS可在获得良好成形外观的同时实现对构件尺寸的有效控制;Al-6.3Cu合金构件内部组织呈现出典型层状分布特征,且各部位组织特征相类似,主要由等轴晶粒组成;原始状态下WAAM构件具有很好的塑性,但其强度较低,与常规VP-GTAW相比,HPVP-GTAW有助于提高增材构件的强度。
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| 关 键 词： | 铝合金 电弧填丝增材制造 成形 显微组织 力学性能 |
Geometry,Microstructure and Properties of Wire+Arc Additive Manufacturing Al-6.3Cu Alloy Deposits |
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| SUN Hongye,CONG Baoqiang,SU Yong,QI Bojin,QI Zewu,WANG Qiang.Geometry,Microstructure and Properties of Wire+Arc Additive Manufacturing Al-6.3Cu Alloy Deposits[J].Aeronautical Manufacturing Technology,2017(14). |
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| Authors: | SUN Hongye CONG Baoqiang SU Yong QI Bojin QI Zewu WANG Qiang |
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| Abstract: | Wire+arc additive manufacturing (WAAM) system for Al-6.3Cu alloy using hybrid pulse variable polarity gas tungsten arc welding (HPVP-GTAW) process was established.The geometry of Al-6.3Cu single-pass multilayer deposits influenced by wire feed speed and travel speed,microstructure and tensile properties of deposited samples produced by the conventional VP-GTAW and HPVP-GTAW process were investigated.Experimental results show that the effective control on deposits geometry is obtained with the coordination of wire feed speed and travel speed.The internal structure of Al-6.3Cu deposits shows the typical layered distribution characteristics,mainly composed of equiaxed grains.WAAM samples with as-deposited condition have good plasticity,but the relatively low strength.Compared with conventional VPGTAW process,it is beneficial in enhancing the strength of Al-6.3Cu deposits using HPVP-GTAW process. |
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| Keywords: | Aluminum alloy Wire + arc additive manufacturing Geometry Microstructure Tensile properties |
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