| XU Fangyuan,ZHU Gangxian,HE Minghang,LI Jiaqiang,ZHANG Xing.Research Status of Wire-powder Hybrid Directed Energy Deposition[J],54(10):13-31 |
| Research Status of Wire-powder Hybrid Directed Energy Deposition |
| Received:November 07, 2024 Revised:January 18, 2025 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2025.10.002 |
| KeyWord:directed energy deposition wire-powder hybrid feeding method multi-material research progress |
| Author | Institution |
| XU Fangyuan |
School of Mechanical and Electrical Engineering, Soochow University, Jiangsu Suzhou , China |
| ZHU Gangxian |
School of Mechanical and Electrical Engineering, Soochow University, Jiangsu Suzhou , China |
| HE Minghang |
School of Mechanical and Electrical Engineering, Soochow University, Jiangsu Suzhou , China |
| LI Jiaqiang |
School of Mechanical and Electrical Engineering, Soochow University, Jiangsu Suzhou , China |
| ZHANG Xing |
School of Mechanical and Electrical Engineering, Soochow University, Jiangsu Suzhou , China |
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| Abstract: |
| As one of the iconic and commonly used technologies in the field of metal additive manufacturing, Directed Energy Deposition (DED) technology mainly focuses on using a single material source such as powder or wire in its traditional operating mode. Given the continuous improvement of performance standards for metal components in the current industry, relying solely on single material manufacturing of components is no longer sufficient to fully meet the increasingly complex functional requirements of specific products. In this context, the strategy of using multiple material combinations to broaden the functional boundaries of parts has shown great potential in addressing the complex challenges of advanced engineering systems, thus giving rise to the emergence of Wire-powder Hybrid Directed Energy Deposition (WP-DED) technology. Compared with the traditional single feed DED process, WP-DED technology, with its more optimized thermal mass coupling effect and unique microstructure of the deposition layer, has achieved significant improvement in deposition efficiency and excellent mechanical properties, opening up new possibilities and challenges for the field of metal material manufacturing and repair. However, the comprehensive understanding of WP-DED forming process in the current academic and industrial circles is still insufficient, especially the lack of recognition of its technical bottlenecks and potential problems, which has become the main obstacle to further innovation and widespread application of this technology. In view of this, the work aims to explore the core operating mechanism of WP-DED technology, which is divided into four categories according to the feeding method, including double-sided feeding, powder coaxial wire lateral feeding, wire coaxial powder lateral feeding, and wire-powder coaxial feeding. These diversified material conveying mechanisms are systematically sorted and summarized. At the same time, the evolution and research progress of WP-DED technology are reviewed, and the evolution, advantages and disadvantages, process exploration, and study of sedimentary layer structure and properties of four feeding methods of WP-DED technology are elaborated in detail, aiming to provide readers with a clear technological development context. In addition, the key technical challenges faced by WP-DED technology in practical applications are also pointed out, such as melt flow control, thermal history management, particle distribution optimization, etc., providing clear directions for subsequent scientific research and engineering practice. Finally, the future development trends of WP-DED technology are prospected, involving material development, mechanism exploration, process optimization, and technological innovation, aiming to stimulate more innovative thinking and practical application exploration about this technology. |
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