首页|沉积策略对电弧增材制造5356铝合金显微组织、缺陷和力学性能的影响

沉积策略对电弧增材制造5356铝合金显微组织、缺陷和力学性能的影响

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基于电弧增材制造技术(WAAM)研究往复扫描(RS)、振荡扫描(OS)和垂直扫描(VS)3种沉积策略对5356铝合金(AA5356)构件的影响,探讨5356铝合金构件的显微组织、缺陷和力学性能.结果表明:相比于RS和OS策略,VS策略使得构件的热量分布均匀.VS策略的显微组织主要由等轴晶组成,使得显微硬度最高值达到HV 77.25.VS策略使得构件的气孔率和微孔尺寸分别下降了 45.52％和19.81％,从而改善了拉伸性能.因此,VS策略为获得显微组织均匀、力学性能优异的AA5356构件提供了一种新的解决方案.
Effect of deposition strategies on microstructures,defects and mechanical properties of 5356 aluminum alloy by wire arc additive manufacturing
Wire arc additive manufacturing(WAAM)is performed to study the effects of three deposition strategies on the 5356 aluminum alloy(AA5356)components.Three deposition strategies are reciprocating scanning(RS),oscillating scanning(OS)and vertical scanning(VS),respectively.The microstructures,defects and mechanical properties of AA5356 components are fundamentally explored.The results show that the VS strategy makes the uniform heat distribution of components.The microstructures with the VS strategy are mainly composed of equiaxed grains,compared with those with RS and OS strategies.The equiaxed grains lead to the highest microhardness(HV 77.25).The porosity and micropore size of the component with the VS strategy are reduced by 45.52％and 19.81％,respectively,resulting in improved tensile properties.Thus,the VS strategy provides a new solution for obtaining AA5356 components with uniform microstructure and excellent mechanical properties.

wire arc additive manufacturingdeposition strategyaluminum alloysmicro structuremechanical properties

朱凯、王健、张炜辰、朱晓磊、陆晓峰

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南京工业大学机械与动力工程学院,南京 211816

电弧增材制造 沉积策略 铝合金 显微组织 力学性能

Postgraduate Research & Practice Innovation Program of Jiangsu Province,ChinaNatural Science Foundation of Jiangsu Province,ChinaNatural Science Research of the Jiangsu Higher Education Institutions of China

KYCX22_1311BK2019068418KJB460016

2024

10.1016/S1003-6326(23)66408-8

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(2)