Abstract：According to the principle of 3D printing, the 3D printing process of metallic materials can be divided into five categories: powder bed fusion, directed energy deposition, binder jetting, material jetting, and sheet lamination. The basic principles, advantages and disadvantages, application fields and progress of the main technologies under various processes are introduced. Finally, several mainstream 3D printing technologies are compared, and it is pointed out that SLM and EBM have become the mainstream of powder bed fusion process and are suitable for small and super-complex monolithic components; directed energy deposition technology uses laser, electron beam or arc as energy sources to melt and deposit materials synchronously, which has high processing efficiency and is suitable for large and high-performance integral components. The binder jetting has a potential application in the manufacturing industry which needs rapid casting manufacturing because of its low production cost and short cycle. The development trend of 3D printing of metal materials is prospected.
柳朝阳 ，赵备备，李兰杰，常福增，祁 健，马英梁. 金属材料3D打印技术研究进展[J]. 粉末冶金工业, 2020, 30(02): 83-89.
LIU Chao-yang, ZHAO Bei-bei, LI Lan-jie, CHANG Fu-zeng, QI Jian, MA Ying-liang. Research progress of 3D printing technology for metallic materials. Powder Metallurgy Industry, 2020, 30(02): 83-89.
2020, Vol. 30 
