High Velocity Air Fuel Spraying for Metal Additive Manufacturing - A Study on Copper

IF 3.2 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Journal of Thermal Spray Technology Pub Date : 2024-03-28 DOI:10.1007/s11666-024-01759-7

M. P. Sreerag, V. Abhijith Vijay, S. Varalakshmi, B. Rajasekaran

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Abstract

Owing to its reflectivity, Copper manufacturing has always been challenging through laser-based additive manufacturing. In this study, we demonstrate additive/bulk manufacturing of copper using high velocity air fuel (HVAF) spray technology, an emerging variant in the thermal spray family. Rapid deposition of millimeter scale copper parts with good mechanical integrity and decent ductility, comparable to that of cold spray, has been shown feasible. The mechanical properties measured along different built directions showed no significance to be considered anisotropic. Electron backscattered diffraction analysis revealed the possibility of developing favorable bimodal grain distribution with a high volume fraction of ultrafine grains (>50%). However, the intersplat porosities and continuous pores were found to be detrimental despite the low overall porosity. HVAF technology demonstrates great potential and appears to be a promising process methodology for bulk/additive manufacturing of metals with a rapid production rate.

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用于金属增材制造的高速空气燃料喷涂--关于铜的研究

由于铜具有反射性，通过激光增材制造铜一直是一项挑战。在本研究中，我们展示了使用高速空气燃料（HVAF）喷涂技术（热喷涂系列中的一种新兴变体）进行铜的快速成型/批量制造。研究表明，快速沉积毫米级铜零件具有良好的机械完整性和延展性，可与冷喷涂技术相媲美。沿不同建造方向测量的机械性能没有显示出各向异性。电子反向散射衍射分析表明，在高体积分数（50%）的超细晶粒的作用下，有可能形成良好的双峰晶粒分布。然而，尽管总体孔隙率较低，但发现板间孔隙率和连续孔隙是有害的。HVAF 技术显示出巨大的潜力，似乎是一种很有前途的工艺方法，可用于批量/快速生产金属添加剂。

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来源期刊

Journal of Thermal Spray Technology 工程技术-材料科学：膜

CiteScore

5.20

自引率

25.80%

发文量

198

审稿时长

2.6 months

期刊介绍： From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving. A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization. The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.