Recent progress on additive manufacturing of multi-material structures with laser powder bed fusion

作者：Di Wang, Linqing Liu, Guowei Deng, Cheng Deng, Yuchao Bai, Yongqiang Yang, Weihui Wu, Jie Chen, Liu Yang, Yonggang Wang, Xin Lin, Changjun Han · 发表于：Virtual and Physical Prototyping · 年份：2022 · DOI：10.1080/17452759.2022.2028343 · 被引用次数：356 · 研究领域：Additive Manufacturing Materials and Processes、Additive Manufacturing and 3D Printing Technologies、Welding Techniques and Residual Stresses

Laser powder bed fusion (LPBF) additive manufacturing has been advancing in the fabrication of metallic multi-material structures with intricate structures and refined material layouts. Herein, a comprehensive review of the recent achievements of multi-material structures via LPBF is provided in terms of interface characteristics and strengthening methods, critical technical issues and potential applications. It begins with the introduction of multi-material structures and the scope of the review. The interface characteristics (including representative multi-material types printed by LPBF, interfacial microstructure, defects, etc.) and strengthening methods of multi-material structures are then presented. Thereafter, the critical technical issues in LPBF for multi-material structures are discussed with regard to equipment development, data preparation, thermodynamic calculation and process simulation, and powder cross-contamination and recycling. Moreover, the potential applications (particularly in biomedical, electronic, aerospace) are illustrated and discussed. Finally, the outlook is outlined to provide guidance for future research.